英文together是什么意思
英文together是什么意思
——英文and的汉语是什么意思
英文and的汉语是什么意思
英文and是一个很简单的单词,不过还是会有人好奇它具体的汉语意思。一起来看看小编为大家整理收集了英语and所表达的汉语意思吧,欢迎大家阅读!
and的汉语意思
英 [nd] 美 [nd, n,nd]
基本解释
连词 而且; 和,与; 于是,然后; 因此
相关例句
连词
1. He is so rich and lives like a beggar.
他非常有钱可是生活得象个乞丐。
2. They sang and danced all night.
他们通宵唱歌跳舞。
3. We ate and drank to our full content.
我们尽情地连吃带喝饱餐了一顿。
4. We talked and talked.
我们说呀,说呀,说个没完。
5. She did the work and she did it well.
她做了这件工作而且做得很好。
and的词典解释
1. (连接两个以上的单词、词组或子句)和,与,同
You use and to link two or more words, groups, or clauses.
e.g. When he returned, she and Simon had already gone...
他回来时,她和西蒙已经走了。
e.g. Between 1914 and 1920 large parts of Albania were occupied by the Italians...
在1914年至1920年间阿尔巴尼亚的'大部分地区被意大利人占据。
2. (连接两个相同的单词或短语,以强调某事物的程度、暗示某事继续发生或在一段时间内不断增加)接连,越…越…
You use and to link two words or phrases that are the same in order to emphasize the degree of something, or to suggest that something continues or increases over a period of time.
e.g. Learning becomes more and more difficult as we get older...
随着年龄增长,学习变得越来越难。
e.g. Day by day I am getting better and better...
我在一天天地好转。
3. (连接两件相继发生的事件)然后,就
You use and to link two statements about events when one of the events follows the other.
e.g. I waved goodbye and went down the stone harbour steps...
我挥手告别,然后走下港口石阶。
e.g. He asked for ice for his whiskey and proceeded to get drunk.
他要求给他的威士忌里面加冰,接着喝得大醉。
4. (连接两句话,第二句话的意思是第一句的延伸)则,而
You use and to link two statements when the second statement continues the point that has been made in the first statement.
e.g. You could only really tell the effects of the disease in the long term, and five years wasn't long enough...
真的,这种病只能在很久以后才能看出它的影响,而5年的时间还不够长。
e.g. The cure for bad teaching is good teachers, and good teachers cost money.
解决教学质量差的办法就是请好的教师,但请好的教师是需要花钱的。
and的情景对话
点咖啡
A:What would you like to drink?
您想喝点儿什么?
B:Coffee, please.
请来一杯咖啡。
A:With sugar and cream?
要加牛奶和糖吗?
B:No, thanks.
不,谢谢。
否定表达
A:I suggest that you go and ask for help from the policeman.
我建议你找**帮忙。
B:Not a bit.
一点儿也不行。
英文together是什么意思(扩展2)
——英文bill的中文是什么意思
英文bill的中文是什么意思
英文bill具有多种用法,那么它具体的中文意思自然也就会有所不同了。下面小编将为你推荐英语单词bill详细的中文意思,希望能够帮到你!
bill的中文意思
英 [bl] 美 [bl]
第三人称单数:bills第三人称复数:bills现在分词:billing过去分词:billed过去式:billed
bill 基本解释
名词 账单; 清单; 钞票; 广告
及物动词 安排; 给…开账单; 为…发提(货)单; 把…登录在账
不及物动词 鸟嘴相接触
例句
1. The House of Commons has not yet passed the bill.
下议院尚未通过该议案。
2. The bill this week is too big for the Blacks to pay.
布莱克一家本周的`帐单数目太大付不起了。
3. The store sent me a bill for $50.
那家商店寄给我一张五十美元的帐单。
bill的单语例句
1. The longtime Republican district fell to the Democrats Saturday when wealthy scientist and businessman Bill Foster snatched the seat in a closely watched special election.
2. Other hopefuls like columnist Arianna Huffington, businessman Bill Simon and * publisher Larry Flynt cited investments or holdings in the millions.
3. The bill tallies the cost of a marriage from the wedding banquet to buying a house and furnishing it.
4. Presidents George Bush the elder and Bill Clinton have campaigned together on behalf of communities devastated by Hurricane Katrina.
5. A gentleman is supposed to act chivalrous and pick up the bill, not charge 50 yuan for a kiss.
6. The " current law " that Pick is referring to is DOMA, which was signed into federal law in September 1996 by then president Bill Clinton.
7. But she said if the bill isnt approved by then it doesnt mean the US isnt making progress in tackling global warming.
8. That will raise the countrys total electricity bill by billions of yuan this year, adding weight to inflation.
9. Opposition deputies brought proceedings to a halt inside the Ukrainian parliament on Thursday, when they staged an action against the bill about the basics of the language policy.
bill的词典解释
1. (商品或服务费用的)账单
A bill is a written statement of money that you owe for goods or services.
e.g. They couldnt afford to pay the bills...
他们无力支付这些账单。
e.g. He paid his bill for the newspapers promptly.
他立即支付了订报费。
2. 给…开送账单
If you bill someone for goods or services you have provided them with, you give or send them a bill stating how much money they owe you for these goods or services.
e.g. Are you going to bill me for this?
你们会给我开这个的账单吗?
3. (餐馆的)账单
The bill in a restaurant is a piece of paper on which the price of the meal you have just eaten is written and which you are given before you pay.
4. 纸币;钞票
A bill is a piece of paper money.
e.g. ...a large quantity of US dollar bills.
大量的美钞
5. 宣传(某人)将参加演出
If someone is billed to appear in a particular show, it has been advertised that they are going to be in it.
e.g. She was billed to play the Red Queen in Snow White.
海报宣传她会扮演《白雪公主》中的“红王后”。
英文together是什么意思(扩展3)
——英文believe的中文是什么意思
英文believe的中文是什么意思
英语单词的产生是汉英两种语言双向交流的产物,一些带有*特色的名称和概念进入了英语词汇,同时还有一些英语词汇进入了汉语,在文化环境中衍生出新的含义,形成了英语词汇的语义文化特征。下面是小编收集英文believe的中文是什么意思,欢迎大家阅读参考。
believe的中文意思
英 [bli:v] 美 [bliv]
第三人称单数:believes
现在分词:believing
过去分词:believed
过去式:believed
动词:信任; 料想; 笃信宗教
及物动词:相信; 信任; 以为,认为; 对…信以为真
相关例句
及物动词
1. I don't believe you.
我不信你说的话。
2. I believe him to be honest.
我认为他是诚实的。
3. We believe Mr.Smith to be innocent.
我们认为史密斯先生是无辜的。
不及物动词
The manager believes in him.
经理信任他。
believe的`词典解释
1. 相信;认为
If you believe that something is true, you think that it is true, but you are not sure.
e.g. Experts believe that the coming drought will be extensive...
专家们认为即将发生的旱灾将侵袭大片地区。
e.g. I believe you have something of mine...
我想你拿了我什么东西。
2. 相信(某人或某人的话)
If you believe someone or if you believe what they say or write, you accept that they are telling the truth.
e.g. He did not sound as if he believed her...
他听起来似乎并不相信她。
e.g. Never believe anything a married man says about his wife...
永远不要相信一个已婚男人说的任何有关他妻子的话。
3. 相信有…;认为…存在
If you believe in fairies, ghosts, or miracles, you are sure that they exist or happen. If you believe in a god, you are sure of the existence of that god.
e.g. I don't believe in ghosts...
我不相信有鬼。
e.g. Do you believe in magic?
你相信魔法真的存在吗?
4. 认为…是应该的(或正确的)
If you believe in a way of life or an idea, you are in favour of it because you think it is good or right.
e.g. He believed in marital fidelity.
他认为婚内应该忠诚。
e.g. ...decent candidates who believed in democracy.
信奉****的正派候选人
5. 对…有信心;信任;信赖
If you believe in someone or what they are doing, you have confidence in them and think that they will be successful.
e.g. If you believe in yourself you can succeed.
只要自信,就能成功。
believe的情景对话
保守约定
A:Quit lying to me!
不要对我说谎话。
B:Trust me. / Believe me.
请相信我。
互相介绍
A:I don‘t believe we‘ve met.
我们以前没有见过吧?
B:No, I don‘t think we have.
我想没有。
A:My name is Chen Sung-lim.
我叫陈松林。
B:How do you do? My name is Fred Smith.
您好,我是弗雷德.史蜜斯。
生活对话
A:Thank you for bringing me. This is great!
谢谢你带我来,太棒了!
B:Rose, do you see? Herb and Don are over there.
柔丝,你看到没,赫伯跟唐在那里。
A:Uh huh. I can't believe it! You're trying to set up Herb and me.
喔,我真不敢相信!你想撮合我跟赫伯。
B:Let's sit with them.
我们去跟他们坐在一起。
A:Ms. Matchmaker, Herb and I just aren't written in the stars.
媒人婆,赫伯和我根本没缘分。
B:Who knows? Come on!
谁说的?来嘛!
英文together是什么意思(扩展4)
——英文bear表达的中文是什么意思
英文bear表达的中文是什么意思
如果我们不知道英文单词bear表达的中文意思,那我们就不能灵活的运用它。下面是小编帮大家整理的英文单词bear表达的中文意思及相关例句,欢迎阅读与收藏。
英文单词bear表达的中文意思
名词 熊; (在证券市场等)卖空的人; 蛮横的人
及物动词 承担; 忍受; 支撑; 生育
不及物动词 生(孩子); 结(果实); 与…有关
形容词 跌价的; 股票行情下跌的; 卖空者的
及物动词
1.Different trees bear different fruits.
什么样的树结什么样的果。
2.He bears a grudge against me because I took his place in the office.
他对我怀恨在心,因为我取代了他在办公室里的位置。
3.She has borne five children.
她生了五个孩子。
不及物动词
1.Our apple trees will bear well this year.
今年我们的苹果树会结许多果实。
名词
1.He is a bear at mathematics.
他是个数学天才。
英文单词bear的词典解释
1.抬;背负;负载;驮
If you bear something somewhere, you carry it there or take it there.
e.g、They bore the oblong hardwood box into the kitchen and put it on the table.
他们把那个长方形的硬木箱抬进厨房,放到桌上。
-bearing
...food-bearing lorries.
装着食物的卡车
2.持有;携带
If you bear something such as a weapon, you hold it or carry it with you.
e.g、...the constitutional right to bear arms.
**规定的携带武器的**
-bearing
...rifle-bearing soldiers.
持来复枪的士兵
...hundreds of flag-bearing marchers.
成百上千举着旗帜的*者
3.承载;支撑
If one thing bears the weight of something else, it supports the weight of that thing.
e.g、The ice was not thick enough to bear the weight of marching men.
冰不够厚,承载不了行**伍的重量。
-bearing
...the load-bearing joints of the body.
身体的承重关节
4.带有(某种标记或特征)
If something bears a particular mark or characteristic, it has that mark or characteristic.
e.g、The houses bear the marks of bullet holes.
房子上散布着弹孔。
e.g、...note paper bearing the Presidential seal...
盖有总统印章的便笺
5.忍受,容忍,忍耐(不愉快经历)
If you bear an unpleasant experience, you accept it because you are unable to do anything about it.
e.g、They will have to bear the misery of living in constant fear of war...
他们不得不忍受长期生活在战争恐惧中的痛苦。
e.g、He bore his sufferings manfully.
他勇敢地面对苦难。
英文单词bear的双语例句
1、For laying indoors, in tunnels, in ducts and underground、Able to bear external mechanical force.
敷设在室内、隧道内、管道及埋地敷设,电缆能承受机械外力作用。
2、Able to bear external mechanical force but not large pulling forces.
英文together是什么意思(扩展5)
——英文how的汉语是什么意思
英文how的汉语是什么意思
英文how虽说是比较简单的单词,但是很多人都不懂它具体的汉语意思。下面我们就来看看英语单词how实际所指的汉语意思,欢迎大家阅读!
how的汉语意思
英 [ha] 美 [ha]
第三人称复数:hows
how 基本解释
副词 怎样; 健康状况如何; 到何种地步; 以任何方式
名词 方式; 方法
例句
1. How did you climb to the top of that building?
你是如何爬上楼顶的?
2. How is Mrs.Smith?
史密斯太太身体好吗?
3. How old is he?
他多大年纪?
how的'词典解释
1. 不管如何;无论怎样
You use how when you want to say that it does not matter which way something is done.
e.g. Two historical questions — you can answer them how you like...
两个历史问题——你可以随便回答。
e.g. It's your life, so live it how you want!
这是你的生活,你想怎样过就怎样过!
2. (强调程度)多么,何等,如此
You use how to emphasize the degree to which something is true.
e.g. I didn't realize how heavy that shopping was going to be...
我没想到买的东西会有多沉。
e.g. Franklin told them all how happy he was to be in Britain again.
富兰克林告诉他们大家能再一次来到英国他非常开心。
3. (用于感叹句中强调形容词、副词或陈述内容)多么,何等,如此
You use how in exclamations to emphasize an adjective, adverb, or statement.
e.g. How strange that something so simple as a walk on the beach could suddenly mean so much...
诸如在沙滩散步这样的小事会突然变得如此重要,真是令人感到不可思议。
e.g. How anxiously she awaited my answer...
她焦急万分地等待我的答复。
4. (表示不赞成或难以相信)你怎么能,你怎么会
You use how in expressions such as 'How can you...' and 'How could you...' to indicate that you disapprove of what someone has done or that you find it hard to believe.
e.g. How can you drink so much beer, Luke?...
你怎么能喝这么多啤酒呢,卢克?
how的单语例句
1. Not only does the art of storytelling spin magic for the game industry, it also influences how advertising business works.
2. The question of how to present bin Laden's death to the world is a difficult balancing act for the White House.
3. Secondly, how far the companies pursue the localization of their business operations.
4. He suggested that other companies can learn experiences from the champions on how to improve their competitiveness by combining social value into their business operations.
5. " Corporate business prospects reflect how political relations go, " he adds.
6. If you come upon a business report about Beijing's real estate market, how do you interpret its " vacancy rate "?
7. That book concentrated on theories while Capital Ideas Evolving shows how these theories have become fundamental structure in the investment business.
8. Prior to establishing a business or conducting any kind of business transactions, examine the transaction's scope to determine how comprehensive the due diligence should be.
9. The public can even find how much money officials will spend on " business travel overseas ".
how的造句
1. (表方式、方法)怎样,怎么
How do you usually go to school? 你怎样去上学? (交通方式)
How does she study English? 她是怎样学习英语的?
2. (指健康等情况)怎样
How is Miss Zhang? 张**身体好吗?
3.(询问天气)怎样
How is the weather in Beijing? **的天气怎样?
相当于What’s the weather like in Beijing?
4. (指数量、程度)多少 ,后接其它形容词或副词,可以构成各类疑问词。
How many students are there in your class? 你班里有多少学生? How many 多少
How long will you stay here? 你要在这儿呆多久? How long 多久
How often do you go t o a movie? 你好久看一次电影? How often 多久一次
5. (表感叹)多么
How fine the weather is! 这些天我多么希望去度一次长假啊!
英文together是什么意思(扩展6)
——英文no way的中文是什么意思
英文no way的中文是什么意思
no way这个相对来说比较简单,但是有些同学对于它的中文意思是什么的还是有些不了解。下面百分网小编将为你推荐英文短语no way的中文意思的内容,希望能够帮到你!
英文短语no way的中文意思
[nu wei]
决不;没门;没有办法
no
英 [n]
美 [no]
形容词
1、No task is so difficult but (that) we can accomplish it.
不管任务怎样困难,我们都能完成。
2、No credit.
不赊帐。
3、He has no friends in this city.
在这个城市里他没有朋友。
副词
1、You'll have to do it, whether or no.
不管你愿意与否,你都得去做。
2、I have no more time to waste here.
我没有更多的时间浪费在这里了。
英文短语no way的单语例句
1、" Potential buyers say'no way am I buying at that price', " Yun says.
2、There is no better way for government institutions to prove their worth and credibility than by making their accounts accessible to all.
3、Although there are drugs that can control the condition, there is no way of repairing the scarring and damage suffered by heart muscles.
4、By the way, military transparency is only relative and no one should expect it to work wonders.
5、By way of contrast, no Chinese university is rated among the top 150 in the rankings.
6、Without generating revenue by way of taxes, no government would be in a position to plan its development.
7、And farmers gain no benefit from this most environmentally friendly way of disposing of the wheat byproduct.
8、Without bold action on such national policies as the rigid residence registration system, we anticipate no major breakthrough in the way our " floating population " is managed.
9、The canned product in no way prepared me for the fact that noodles appear in cultures worldwide as some of their signature dishes.
10、For example, capital flows are no longer one way - from developed to developing economies.
英文短语no way的双语例句
1、By the way, I did not hear the sound of your carriage; you have left it yonder, behind the coppice at the fork of the roads, no doubt
说也奇怪,我刚才没有听到您车子的声音,也许您把它留在岔路口那面的树丛后面了吧。
2、This is a story with no enemy, only an amorphous entity that drops bombs from the skies while terrified young soldiers must find a way to carry out their mission until their very last minutes on that mountaintop.
在这部影片中,****,只有一个隐形**从空中扔投**,在危急时刻威胁着年轻的士兵们必须在山顶上找到一种方法来完成他们的任务。
3、No matter which way you decide to go there are marketing decisions to be made.
无论你选择走哪条路都要做出营销决定。
4、My solution: no way, the content of the dissolution of glmsgroup, one by selecting the text block, a South-to a slowly!
我的处置方法:不有方法,不兵边容闭幕群组,一个一个选汉笔墨块,一个一个匆匆调吧!
5、I once made a report, but everyone here is is of the Kongluo minority, so the police have no way to work here.
我之前也报过警,可是这儿全是空落族,**根本没办法在这儿工作。
6、And in the long term, there is no way around it.
长期来看,这一产业的发展是必然的。
7、Paul: And I suppose there is no way to hurry it up?
保罗:那么,我猜,我也没有办法加速前进,是吧?
8、He said there against what you body does not check, I said no, but also examined to what he says I have inflammation, inflammation cured first, he said that after eating drugs, he said that if a That is to say that he has the drugs, three or four hundred a day of flowers, may be the last so that we did not think that he said it was not only so small, he said you are not urgent, it is checked in, there is no problem I do not want the door just started looking at that, may I wish it did not matter how much money to spend, the most important to bear in the end, I insist on seeing it on the door, who can think, what a day of high consumption, could eventually I have not pregnant, and now there is no way I am the door, if the doctor does not say that I am able to eat that bad on the quasi-drugs, we do not get the drug of interest, in order to buy this kind of inter-provincial, I Internet search portal, we hope to see.
到那他说你这抗什么体的`检查没有,我说没有,又检查了那几向,他说我有炎症,先把炎症治好,他说之后在吃那药,一听他说那话就是说他那有那药,每天三四百的花,可到最后让我们没有想到的是他说没有只能等,他说你还小又不急,在那都查了,都没有问题,我门刚开始也不想在那看,可一想花多少钱不要紧,最主要的到最后能怀上,我门就坚持看了下去,可谁想到,每天着么高的消费,居然最终我还没有怀上,到现在我门也没有办法,要是那医生不说我吃那药准能坏上,我们对这种药也不会这样的感兴趣,为了买这样的要跨省,我门在网上查,结果我们就看到希望了。
9、I have it on good authority that there's no way this light can cause skin cancer.
我有来自权威人士的说法,这种光不可能引起皮肤癌。
10、Once you've broken the seal of a bottle there's no way you can put it back together again
一旦你撕开瓶子的密封条,你就无法再把它复原。
11、Hey, no way, buddy.
嘿,没门儿,老兄。
12、There was no way she could have coped with a baby around.
身边带着一个孩子,她不可能应付得过来。
13、Wabel's victory was in no way devalued by the absence of series leader Tom Fisher.
瓦贝尔的胜利绝没有因系列赛领先者汤姆·费希尔的缺阵而失色。
14、His enthusiasm was in no way flagging
他的热情丝毫未减。
15、This magazine in no way glorifies gangs.
这本杂志绝对没有美化混混们。
16、There is no way to measure these effects; the chances are it did some good.
没有办法衡量这些效果;可能它起到了一些作用。
17、They have no way to dispose of the hazardous waste they produce
他们没有办法处理掉自己产生的有害废料。
18、There's no way to predict the future health of the banking industry.
银行业未来是否会兴旺发达根本无法预测。
19、How can anyone blame her for actions for which she feels herself to be in no way responsible?
她认为自己对这些行动不负有责任,别人怎么还能因此而责备她呢?
20、This only goes to show how this racist leopard has in no way changed his spots.
英文together是什么意思(扩展7)
——英文meet表示的中文是什么意思
英文meet表示的中文是什么意思
meet这一个英文单词的用法是很普遍的,因此我们要先掌握它的中文意思。下文是小编为大家搜集整理的英文meet表示的中文是什么意思,欢迎大家阅读参考。
英文单词meet表示的中文意思
及物/不及物动词 相遇;相识;开会;接触(某物)
及物动词 满足;迎接;支付;经历(常指不愉快的事)
名词 运动会,体育比赛;猎狐运动(尤其英式英语)
形容词 适当的`;合适的;恰当的
及物动词
1.Let's meet that problem when it comes up.
那问题一出现,我们就来对付它。
2.To be a pilot, one must meet certain physical standards.
要当飞行员必须达到体格上的某些标准。
3.We must learn to meet adversity gracefully.
我们必须学会冷静地去应付逆境。
4.The cars met head-on.
两辆汽车头迎头相撞。
英文单词meet的词典解释
1.碰到;遇见
If you meet someone, you happen to be in the same place as them and start talking to them.You may know the other person, but be surprised to see them, or you may not know them at all.
e.g.I have just met the man I want to spend the rest of my life with...
我刚刚遇到了我想与之共度余生的男人。
e.g.He's the kindest and sincerest person I've ever met...
他是我所见过的最友善、最真诚的人。
2.(约定在某处)相会,碰头
If two or more people meet, they go to the same place, which they have earlier arranged to do, so that they can talk or do something together.
e.g.We could meet for a drink after work...
下班后我们可以见面喝上一杯。
e.g.Meet me down at the beach tomorrow, at 6am sharp.
明天早上6点整在海滩上跟我见面。
3.被引见给;认识;结识
If you meet someone, you are introduced to them and begin talking to them and getting to know them.
e.g.Hey, Terry, come and meet my Dad.
嗨,特里,过来认识一下我爸爸。
4.(初次)见面;认识;结识
You use meet in expressions such as 'Pleased to meet you' and 'Nice to have met you' when you want to politely say hello or goodbye to someone you have just met for the first time.
e.g.'Jennifer,' Miss Mallory said, 'this is Leigh Van-Voreen.' — 'Pleased to meet you,' Jennifer said...
“珍妮弗,”马洛里**说,“这位是利·范沃林。”——“见到您很高兴,”珍妮弗说。
e.g.I have to leave.Nice to have met you.
我得走了。认识您很高兴。
5.(到火车站、飞机场或公共汽车站)迎接
If you meet someone off their train, plane, or bus, you go to the station, airport, or bus stop in order to be there when they arrive.
e.g.Mama met me at the station...
妈妈在车站接我。
e.g.Lili and my father met me off the boat...
莉莉和我父亲在码头迎接我。
英文单词meet的情景对话
找工作
B:Hello, Mr.Peepers.How do you do?
嗨,皮伯斯先生,你好。
A:It’s (nice/ a pleasure/ an honor) to meet you.
见到你很(高兴/高兴/荣幸)。
工作环境
如果你刚刚入市,来找我,会教你边学习边操作;如果你已经身在其中并不理想,可以来找我、我帮助你,不会再让你一错再错;如果你仓位单子被套,我会根据你的进场点位进行合理的解套。因为每个人被套的点位不一样,解的方法也会不一样,有的适合稳健者有的适合激进者。我定会用最合适的方法实实在在为你解决问题、辅佐你出局。
欢迎大家来一起交流,互相学习!
英文together是什么意思
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延伸阅读:
区块链入门知识扫盲,别只顾着炒币,也需要了解点基础的
作为金融圈的老司机,别人总以为我上窥天文,下知地理,左会赚钱,右懂政治(懂这么多谁还理你们)所以总来问我:区块链到底是什么东西,去年周围很多人投资这个赚大钱了耶,能不能给我们讲讲巴拉巴拉的。既然行情没什么变化,昨天写的文章分析文章也基本对了,包括方向,支撑阻力位,目前看依然有效,所以今天这里不过多重复。这里是行情分析传送门。那就来普及一下区块链方面的知识。
一、什么是区块链
区块链是什么?一句话,它是一种特殊的分布式数据库。
首先,区块链的主要作用是储存信息。任何需要保存的信息,都可以写入区块链,也可以从里面读取,所以它是数据库。
其次,任何人都可以架设服务器,加入区块链网络,成为一个节点。区块链的世界里面,没有中心节点,每个节点都是平等的,都保存着整个数据库。你可以向任何一个节点,写入/读取数据,因为所有节点最后都会同步,保证区块链内容一致。
二、区块链的最大特点
分布式数据库并非新发明,市场上早有此类产品。但是,区块链有一个革命性特点。就是区块链没有管理员,它是彻底无中心的。其他的数据库都有管理员,而区块链没有。如果有人想对区块链添加审核,也实现不了,因为它的设计目标就是防止出现居于中心地位的管理当局。
正是因为没有中心集中管理,区块链才能做到无法被控制。否则一旦大公司大集团控制了管理权,他们就会控制整个平台,其他使用者就都必须听命于他们了。
但是,没有了管理员,人人都可以往里面写入数据,怎么才能保证数据是可信的呢?被坏人改了怎么办?请接着往下读,这就是区块链奇妙的地方。
三、区块是什么
区块链由一个个区块(block)组成。区块很像数据库的记录,每次写入数据,就等于创建了一个区块。
每个区块包含两个部分。
区块头(Head):记录当前区块的特征值
区块体(Body):实际数据
区块头包含了当前区块的多项特征值。
生成时间
实际数据(即区块体)的哈希
上一个区块的哈希
...
这里,你需要理解什么叫哈希 (hash),这是理解区块链必需的。
所谓"哈希"就是计算机可以对任意内容,计算出一个长度相同的特征值。区块链的 哈希长度是256位,这就是说,不管原始内容是什么,最后都会计算出一个256位的二进制数字。而且可以保证,只要原始内容不同,对应的哈希一定是不同的。
例如,字符串123的哈希是a8fdc205a9f19cc1c7507a60c4f01b13d11d7fd0(十六进制),转成二进制就是256位,而且只有123能得到这个哈希。(理论上,其他字符串也有可能得到这个哈希,但是概率极低,可以近似认为不可能发生。)
因此,就有两个重要的推论。
推论1:每个区块的哈希都是不一样的,可以通过哈希标识区块。
推论2:如果区块的内容变了,它的哈希一定会改变。
四、 Hash 的不可修改性
区块与哈希是一一对应的,每个区块的哈希都是针对"区块头"(Head)计算的。也就是说,把区块头的各项特征值,按照顺序连接在一起,组成一个很长的字符串,再对这个字符串计算哈希。
Hash = SHA256( 区块头 )
上面就是区块哈希的计算公式,SHA256是区块链的哈希算法。注意,这个公式里面只包含区块头,不包含区块体,也就是说,哈希由区块头唯一决定,
前面说过,区块头包含很多内容,既包括当前区块体的哈希,还有上一个区块的哈希。这意味着,如果当前区块体的内容变了,或者上一个区块的哈希变了,一定会引起当前区块的哈希改变。
这一点对区块链有重大意义。如果有人修改了一个区块,该区块的哈希就变了。为了让后面的区块还能连到它(因为下一个区块包含上一个区块的哈希),该人必须依次修改后面所有的区块,否则被改掉的区块就脱离区块链了。这个工作量是非常非常大的,加上哈希的计算很耗时,短时间内修改多个区块几乎不可能发生,除非有人掌握了全网51%以上的计算能力。
正是通过这种联动机制,区块链保证了自身的可靠性,即数据一旦写入,就无法被篡改。这就像历史一样,发生了就是发生了,从此再无法改变。
综上所述,由于每个区块都连着上一个区块,这也是"区块链"这个名字的由来。
五,区块链的可能发展
区块链有三个基本阶段:
区块链1.0阶段,电子货币,包括比特币、瑞波币等等。电子货币阶段可以做最简单的多中心化交易。
区块链2.0时代,也就是我们目前所处在的时代,以区块链为重要标的的阶段,最重要的是智能合约、数字资产还有多中心化的各种商业应用,包括认证、支付等。
区块链3.0阶段,是未来我们希望能够形成的一个完全多中心化的社会网络,如果能够达到这一点,就意味着我们可以以极低的成本形成社会的信任关系,从而使整个社会运行成本大幅下降。
六、区块链与数字货币、比特币的关系
数字货币与区块链是有机结合在一起的,是紧密相连的关系,区块链是数字货币的最底层技术也是最重要的技术手段。数字货币就是一种加密货币的形式所在,正是因为这种数字货币是需要加密的形式存在的,因此,数字货币是需要区块链技术来支持的。
可以说数字货币是区块链的一种应用。简单说如果区块链就是面粉,那么面粉可以做成很多东西,比如馒头、包子,那么其中一种面条就是比特币,还有其它加宽型的面条、更有韧劲的可能是ETH、EOS。
BTC、ETH、EOS等数字货币的行情没有大的变化,价格还在昨天发表的行情分析文章里运行,可以今天不重复发表,可以参考昨天操作策略。
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