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        科技翻譯例文——空間旅行:到月球和更遠的星球上去

        發布時間: 2023-10-09 09:26:47   作者:etogether.net   來源: 網絡   瀏覽次數:
        摘要: 空間旅行遇到的問題很多,其中,首要的也是最嚴重的問題是引力,當鉛筆掉到地上時,你就會發現是引力在起作用。


        Travel in Space: To the Moon and Beyond

        The rocket engine, with its steady roar like that of a waterfall or a thunderstorm, is an impressive symbol of the new space age. Rocket engines have proved powerful enough to shoot astronauts beyond the earth's gravitational pull and land them on the moon. We have now become travelers in space.

        空間旅行:到月球和更遠的星球上去

        火箭發動機帶著瀑布和雷鳴般深沉的轟嗚,是航天新時代的象征,給人以深刻的印象?;鸺l動機已經證明有足夠的動力,能將字航員發射到地球引力作用范圍之外,并使之登月?,F在人類已經可以在太空中遨游了。


        Impressive and complex as it may appear, the rocket is a relatively simple device. Fuel that is burned in the rocket engine changes into gas. The hot and rapidly expanding gas must escape, but it can do so only through an opening that faces backward. As the gas is ejected with great force, it pushes the rocket in the opposite direction.

        There are many problems connected with space travel. The first and greatest of them is gravity. If you let your pencil drop to the floor, you can see gravity in action. Everything is held down to the earth by magnetic force. The weight of something is another way of describing the amount of force exerted on it by gravity. A rocket must go at least 2500 miles an hour to take anyone beyond the gravity of the earth into space.

        盡管火箭看起來也許會給人深刻的印象,并且似乎很復雜,但它卻是一種相當簡單的裝置。燃料在火箭發動機里燃燒時變成燃氣。這種灼熟的迅速膨脹的燃氣必須排走,但它只能從向后的出口中排出。當燃氣以巨大的力量排出時,便推動火箭朝相反的方向飛行。

        空間旅行遇到的問題很多。其中,首要的也是最嚴重的問題是引力。當鉛筆掉到地上時,你就會發現是引力在起作用。世上萬物都被磁力吸引在地面上。物體的重量是引力施加在該物體上的力的大小的另一種說法?;鸺乃俣戎辽俦仨氝_到每小時2500英里,才能把人帶出地球引力的作用范圍進入太空。


        Another problem is the strain that a person is subjected to when a rocket leaves the ground. Anything that is not moving tends to resist movement. As the rocket leaves the ground, it pushes upward violently, and the person in the nose is pushed back against the chair. During this thrust, gravity exerts a force on the body equal to nine times its normal force.

        Once out of the earth's gravity, an astronaut is affected by still another problem --- weightlessness. Here,if a pencil drops, it does not fall. If a glass of water is turned upside down, the water will not fall out. All of us who are used to gravity expect things to have weight and to fall when dropped. Our bodies, which are accustomed to gravity, tend to become upset in weightless conditions. Recent long flights have shown that the body needs special exercise in a spaceship.

        另一個問題是火箭離開地面時人所經受的過度受力狀態。凡是靜止的物體都會抵抗運動。當火箭離開地面時,火箭猛烈地向上推,于是便迫使位于火箭頭部的宇航員向下緊緊抵著座椅。在這種猛烈推動的過程中,引力在人體上施加的力九倍于正常情況下人體受到的力。一旦脫離了地球的引力作用之后,宇航員又會遇到另一個問題一失重狀態的影響。這時,鉛筆掉下不會下落,一杯水上下顛倒過來,水不會流出。人們已習慣于重力作用,因此,對物體有重量,扔掉就會墜落這些現象都已習以為常。人體也因為習慣了引力,所以,在失重狀態下往往會失常。最近進行的長時間飛行已經證明,人體需要在宇宙飛船上進行專門的訓練之后才能適應失重環境。


        Cosmic rays and tiny dust particles also raise a problem. Outer space, which has no air, is filled with both of these. The dust particles can damage the front end of the rapidly moving spaceship. The cosmic rays,though they are invisible to the naked eye, can go through the ship and the astronauts themselves. No one is sure what damage the cosmic rays can do to a human being, but scientists feel that brief exposure is probably not very harmful.

        宇宙射線和塵埃也是個問題。外層空間雖然沒有空氣,但卻充滿了這兩種東西。小塵??蓳p壞飛速飛行中的宇宙飛船的前端;而宇宙射線盡管肉眼看不見,卻能穿過飛船和宇航員本人的身體。宇宙射線會對人類造成什么樣的損害,現在無論誰都說不清楚,不過,科學家認為短暫地照射一會兒或許危害不十分大。


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