男友太凶猛1v1高h,大地资源在线资源免费观看 ,人妻少妇精品视频二区,极度sm残忍bdsm变态

您現(xiàn)在的位置: Language Tips > BBC > Take Away English

Time travel 時空穿梭

Time travel 時空穿梭

What a time machine might look like?

Vocabulary: history and physics 詞匯: 歷史和物理

If you could travel in time, where would you go?

收聽與下載

Perhaps you would watch an original performance of a Shakespeare play in Elizabethan England? What about hanging out with Laozi in the Spring and Autumn period? Or maybe you'd voyage far ahead of the present day to see what the future holds.

The possibility of time travel is indeed tantalising. Stories exploring the subject have been around for hundreds of years. Perhaps the best known example is science fiction novella The Time Machine, written by HG Wells in 1895, about a contraption that transports people into the far future.

But could time travel actually be possible?

Some scientists say yes, in theory.

They propose using cracks in time and space called 'wormholes', which could be used as shortcuts to other periods. Einstein's theory of relativity allows time travel in extreme circumstances. And British physicist Stephen Hawking says you could travel into the future with a really fast spaceship – going at nearly the speed of light. Though building such a spaceship would of course be no simple task.

Even if you could travel into the past, there is something called the 'grandfather paradox'. It asks what would happen if a time traveller were to go back in time and kill their own grandfather; and therefore prevent themselves from being born.

If the time traveller wasn't born, how would he travel back in time?

And would you really like to visit the future? In HG Wells's book, the main character travels into distant time where he arrives at a beach and is attacked by giant crabs. He then voyages 30 million years into the future where the only living thing is a black blob with tentacles.

If that's what's in store, maybe we are better just living in the present day after all.

Glossary 詞匯表 (點擊單詞收聽發(fā)音)

 

主站蜘蛛池模板: 襄樊市| 麻江县| 新源县| 柘城县| 晋中市| 峡江县| 乐平市| 九江市| 浪卡子县| 松江区| 沂源县| 襄垣县| 江山市| 五河县| 宿迁市| 广水市| 祁连县| 新泰市| 历史| 新河县| 大田县| 浦城县| 黑水县| 苗栗县| 晋江市| 子长县| 靖边县| 科技| 黑山县| 建昌县| 景宁| 巩义市| 平度市| 璧山县| 西华县| 吴桥县| 和政县| 金门县| 开化县| 三门峡市| 互助|