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时差N小时 地心引力为何有益于人类?(上)

时间:2021-09-01 23:12:28

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(单词翻译)

When astronauts return from long missions in space, their exit from the spacecraft is usually hidden from public view.

当宇航员结束太空的长期任务返回地球时,他们走出太空飞船的画面往往不会曝光。

This is because after several months in weightless conditions, things we usually take for granted,

这是因为在失重状态下生活了数月,一些我们认为理所当然能够做到的动作,

such as walking and keeping our balance, present great difficulties for the astronauts.

如走路或保持平衡对宇航员来说十分困难。

Forces Around Us

环绕四周的力量

The culprit is gravity, or the virtual lack of it in space.

罪魁祸首是地心引力,或者说太空没有地心引力。

Gravity is the force with which particles of matter attract each other.

地心引力是指物质粒子相互吸引的力量。

The greater its mass, the stronger an object’s gravitational force.

一个物体质量越大,其地心引力越大。

That’s why we normally stay rooted to the surface of the earth instead of floating off; the earth’s mass is much greater than ours.

由于地球的质量远大于我们,所以我们可以一直站在地球表面而不会漂浮在空中。


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0 around xN9y0     
adv.大约,到处,在周围;prep.在...周围
参考例句:
  • It was dark around me.我周围一片黑暗。
  • Is there a shopping center around?这附近有没有购物中心?
0 as pNiyL     
conj.按照;如同
参考例句:
  • He got work in a hotel as a waiter.他在一家旅馆找到了当服务生的工作。
  • In the hotel,the old men were drinking away as usual.在旅馆里,这些老人和往常一样喝个不停。
0 astronauts 193819d19d3e8fd8dd43dc2d745c2916     
n.宇航员,太空人( astronaut的名词复数 )
参考例句:
  • Astronauts have brought back specimens of rock from the moon. 宇航员从月球带回了岩石标本。
  • Astronauts work in weightless conditions. 宇航员在失重的条件下工作。
0 attract tO6yF     
v.吸引;引起注意或兴趣
参考例句:
  • That will attract a big crowd of people.一定会吸引很多人。
  • He shouted to attract attention.他大声叫喊以吸引注意。
0 balance KP3y4     
n.秤,天平,平衡,[商]收支差额,结余,余额;资产平稳表;v.平衡,称,权衡,对比,结算;vt.称,权衡,比较,使平衡,结算,抵消
参考例句:
  • You must learn to keep your balance in skating.在溜冰时你得学会保持平衡。
  • I found it hard to keep my balance on the icy path.我觉得在冰滑小道上走路要保持身体平衡是相当困难的。
0 because EQXyl     
conj.由于,因为
参考例句:
  • Because his car is old.因为他的汽车旧了。
  • He was late because of an accident.他是因事故而迟到的。
0 conditions b5b399ec1fcfe753f58dbafa197efdc1     
n.(居住、工作或做事情的)环境;(影响某事发生的)物质环境;承保险别;条件( condition的名词复数 );状况;健康状况;环境
参考例句:
  • The prisoners were living in appalling conditions. 囚犯的居住条件极为恶劣。
  • TV pictures showed the arctic conditions. 电视画面显示了严寒的环境。
0 difficulties b11a578a3831f34c2044c055223e93c4     
n.困难( difficulty的名词复数 );难度;难事;麻烦
参考例句:
  • I am acutely aware of the difficulties we face. 我十分清楚我们面临的困难。
  • the difficulties of English syntax 英语句法的难点
0 each yrNxG     
adj.每个,每,每一;adv.每个;int.每个,个人,个自
参考例句:
  • Each boy has a textbook.每个男孩都有课本。
  • Each child brought a little present to the mother.每个孩子给母亲带来一件小礼物。
0 earth ar7xL     
n.陆地;大地;地球
参考例句:
  • The earth moves round the sun.地球绕着太阳转。
  • Spring returns to the earth.大地回春。
0 exit Ym7xg     
n.出口,退场,离去;[计算机]DOS命令:如果存在这个命令,则它可从辅助处理器返回到主处理器;v.退出,脱离
参考例句:
  • They made a rush for the exit.他们猛然冲向出口处。
  • The fire exit downstairs will be open for one minute.楼下的防火出口将会打开一分钟。
0 floating floating     
adj.不固定的,流动的,浮动的v.(使)浮动( float的现在分词 );(使)漂浮[飘动];(使货币汇率)自由浮动;轻盈走动
参考例句:
  • a bloated body floating in the canal 沟渠里一具发胀的浮尸
  • His decapitated body was found floating in a canal. 人们发现他被斩首的尸体漂浮在一条水渠里。
0 force QgDzQ     
n.力量,武力,影响力;v.强迫,强夺,加压力;[计算机]强制
参考例句:
  • I don't hold with the use of force.我不赞成使用武力。
  • We had to use force to get into the house.我们不得不强行进屋。
0 forces osyzkO     
n.力( force的名词复数 );武力;(社会)势力;气力v.强制( force的第三人称单数 );强作;施强力于;促成早熟
参考例句:
  • Spacecraft which are re-entering the earth's atmosphere are affected by g forces. 重返大气层的航天器受到重力的作用。
  • the enemy onslaught on our military forces 敌军对我军的进攻
0 granted fc00fa278c75792efc28397308b9ad6e     
conj.假定,就算v.(退一步)承认( grant的过去式和过去分词 );(尤指正式地或法律上)同意;准许;让渡
参考例句:
  • The president granted a general amnesty for all political prisoners. 总统大赦了所有的政治犯。
  • She feared she would not be granted re-entry into Britain. 她担心不会获准再次踏足英伦。
0 gravity Felz2     
n.重力,引力,地心引力
参考例句:
  • An apple falls down because of gravity.由于重力的关系,苹果往下掉。
  • The stone rolled down the mountain by gravity.这块石头由于重力作用而滚下山。
0 hidden VrnzKc     
hide的过去分词
参考例句:
  • Our trips are all-inclusive—there are no hidden costs. 我们的旅行费用全包—没有任何隐含性费用。
  • There are fears of a hidden agenda behind this new proposal. 人们担心这一新提议的背后有不可告人的目的。
0 instead c6uxQ     
adv.代替;顶替
参考例句:
  • She decided to leave here on Sunday instead of Monday.她决定星期日而不是星期一离开这里。
  • Will you go to the party instead of me?你替我赴宴好吗?
0 keeping Xp8znl     
n.遵守;一致;(与…)协调;保管v.(使)保持, (使)继续( keep的现在分词 );(食品)保持新鲜;保有;保存
参考例句:
  • It was a challenge, keeping ten boisterous seven-year-olds amused. 要逗着十个好动的七岁孩子玩真是一种挑战。
  • She became neurotic about keeping the house clean. 她对保持房屋清洁有点神经质。
0 lack m2Px8     
n.缺乏,不足;vi.缺乏,短少,没有缺乏,短少,没有;需要
参考例句:
  • He is unable to do the job for lack of experience.他缺少经验不能胜任这项工作。
  • I think a lack of confidence underlies his manner.我认为他表现出的态度是因为他缺乏信心。
0 long M01xN     
adj.长的
参考例句:
  • Summer is the season of long days.夏天是日长的季节。
  • Winter is the season of long nights.冬季是夜长的季节。
0 mass aBLx2     
n.块,大多数,质量,大量,群众,弥撒;adj.群众的,大规模的,集中的;vt.使集合
参考例句:
  • There is a mass of sand in the yard.院里有一堆沙子。
  • There is a mass of stones in the yard.院子里堆放着一大堆石头。
0 matter cBExQ     
n.事情;问题;麻烦事,毛病
参考例句:
  • It is just a matter of time.这只是个时间问题。
  • This matter is very important.这件事很重要。
0 missions 9547c4df6d7db2c859a25f3e6b1c69f9     
n.代表团( mission的名词复数 );使命;官方使命;布道所
参考例句:
  • The enemy airmen kicked up at the orders to fly more missions. 敌方飞行员开始对执行更多飞行任务的命令表示不服。 来自《简明英汉词典》
  • During the spring of 1943, the British missions were strengthened. 在一九四三年春季,英国代表团加强了。 来自辞典例句
0 months da36cfaf48b9e19896e23e1207040d1e     
n.月( month的名词复数 );一个月的时间;复数months: 数月;很长时间
参考例句:
  • Their marriage was annulled after just six months. 他们的婚姻仅过半年就宣告取消。
  • Paris was besieged for four months and forced to surrender. 巴黎被围困了四个月后被迫投降。
0 normally ln8zVb     
adv.正常地,通常地
参考例句:
  • I normally do all my shopping on Saturdays.我通常在星期六买东西。
  • My pulse beats normally.我脉搏正常。
0 off 7Ilxf     
adj.远的;休假的,空闲的;adv.走开,出发,隔断;prep.离开,脱落,在...之外
参考例句:
  • You'd better cool off first.你最好先冷静下来。
  • I need some time off.我需要一些时间休息。
0 particles 7e45214f92b501af4495b82455b39e7c     
微粒( particle的名词复数 ); 颗粒; 极少量; 小品词
参考例句:
  • These small particles agglomerate together to form larger clusters. 这些颗粒聚结形成较大的团。
  • The nucleus of an atom consists of neutrons, protons and other particles. 原子核由中子、质子和其他粒子构成。
0 present 4Qzxt     
n.礼物,现在;adj.当面的,出席的,现在的;v.赠送,提出,呈现
参考例句:
  • Each boy gets a present.每个男孩得到一份礼物。
  • Do you like your present job?你喜欢现在的工作吗?
0 public ESExy     
adj.公开的,众所周知的,公众的;n.公共场合,公众,同好者
参考例句:
  • Most children go to public school.大多数孩子上的是公立学院。
  • She is shy of speaking in public.她怯于在公众面前讲话。
0 return mDvyr     
vi.返回,回来;送还;回复,恢复;vt.归还,送还;n.返回,归来;偿还,归还;回复
参考例句:
  • I'll return at 10 this evening.我今晚十点回来。
  • I often return in dreams to my hometown.我常常在梦中回到我的故乡。
0 rooted ad8058a084bee8a14a6f23efa52d39d0     
adj.生根的,有根的;固定的,根深蒂固的v.生根;使(某事物)深深扎根
参考例句:
  • His problems are deeply rooted in his childhood experiences. 他的问题的祸根在于他童年的经历。
  • Our movement is rooted in the hearts of the people. 我们的运动在人民的心中根深蒂固。 来自《简明英汉词典》
0 several STMzb     
adj.几个,若干,数个;各个的,各自的
参考例句:
  • Words often have several meanings.单词往往有若干个意思。
  • Several new members have come into the club since last year.自去年以来,又有些新成员加入了俱乐部。
0 space 9wawV     
n.太空,宇宙空间
参考例句:
  • Satellites are flying in space.人造卫星在太空遨游。
  • Is space safe for people?人在太空安全吗?
0 spacecraft TwowV     
n.太空船,宇宙飞船
参考例句:
  • There're three astronauts in the spacecraft.在这艘宇宙飞船里有三名宇航员。
  • The spacecraft rounded the moon.宇宙飞船环绕月球飞行。
0 stay tuzw7     
v.停留,保持,维持
参考例句:
  • How long will you stay there?你要在那里停留多久?
  • You should stay at home.你应该呆在家里。
0 stronger stronger     
adj.更强壮的;强的( strong的比较级 );坚强的;强烈的;强壮的
参考例句:
  • The hedge of stones is much stronger than a wood hedge. 石头围墙比竹篱笆结实多了。 来自《简明英汉词典》
  • They won a miraculous victory over much stronger enemy. 他们战胜了远比自己强大的敌人,赢得了非凡的胜利。 来自《简明英汉词典》
0 such psww9     
adj.如此的,这样的;pron.这样的;adv.如此地
参考例句:
  • He is such a man.他是这样一个人。
  • He spent all his money,he is such a fool.他这样傻,花光了所有的钱。
0 surface QrFwj     
n.表面,平面;adj.表面的,肤浅的;v.使...成平面,被露出来,在表面工作
参考例句:
  • A gentle wind disturbed the surface of the water. 微风拂动水面。
  • The surface of the water is as smooth as a mirror.水平如镜。
0 things e64c3132023b29762b354a750b474c53     
n.(个人的)用品;需要的东西;生物;事实;物( thing的名词复数 )
参考例句:
  • Things ain't what they used to be. 现在情况不比从前了。
  • Things have been going badly . 事情进展得不顺利。
0 usually 9jXwX     
adv.通常,平常,一般
参考例句:
  • What do you usually eat?你平时都吃什么?
  • We usually go by train.我们通常坐火车去。
0 view 9hdwt     
n.风景;视野,观点,见解;vt.观看,注视;考虑
参考例句:
  • I disagree with this view.我不同意这个看法。
  • I'll sit here and look at the view.我要坐在这里观看景色。
0 virtual yhfwi     
adj.实质上的,事实上的,实际上的
参考例句:
  • This reply is a virtual acceptance of our offer.这一回答实质上是接受了我们的建议。
  • At that time the East India Company was the virtual ruler of Bengal.那时东印度公司是孟加拉的实际统治者。

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