Does life exist on other planets?
其他行星上有生命吗？
Is there intelligent life on other planets?
在其他星球上存在具有智力的生命吗？
The theory supposes the existence of life on other planets.
这个理论假定其他行星存在生命。
Science fiction writers have long dreamed that humans might one day quit the earth to colonize other planets.
科幻小说作家们长期以来一直梦想着人类有一天可以离开地球移居到其它星球上。
They are aliens on other planets.
它们是其他星球上的外星人。
The most popular one is that they may contain visitors from other planets.
最常见的一种说法是它们可能包含来自其他行星的访客。
The UFOs, it is believed, must contain scientists from other planets who are studying life on earth.
人们相信，这些不明飞行物中一定有来自其他星球的科学家，他们正在研究地球上的生命。
Our planet Earth, together with other planets, revolve around our Sun in what is called our Solar system.
我们的行星地球，连同其他行星，围绕我们的太阳旋转，这就是我们的太阳系。
Aristarchus recognized from his calculations that the Sun was much larger than the Earth and other planets.
阿利斯塔克从他的计算中认识到，太阳比地球和其他行星要大得多。
The absence of oxygen on other planets means that those planets lack an ozone shield to protect life forms against UV radiation.
其他行星上没有氧气，这意味着这些行星缺乏保护生命体免受紫外线辐射的臭氧层。
The founder of two tech companies, Tesla Motors and SpaceX, is bringing electric vehicles to mass market and enabling humans to live on other planets.
特斯拉汽车和SpaceX 这两家科技公司的创始人正在将电动汽车推向大众市场，并使人类能够在其它行星上生活。
Complex life evolved on the Earth's surface, but not on Mars or other planets in the solar system because on those planets, early surface life was killed by UV radiation.
复杂的生命在地球表面进化，而不是在火星或太阳系的其他行星上，因为在那些行星上，早期的地表生命被紫外线杀死了。
Earth is the only one of the inner planets with a large satellite, the orbit of which is neither in the equatorial plane of Earth nor in the plane in which the other planets lie.
地球是内行星中唯一一个有大卫星的，它的轨道既不在地球的赤道平面上，也不在其他行星所在的平面上。
The absence of an oxygen atmosphere on Mars and other planets in our solar system means that these planets also lack an ozone shield that would protect surface-dwelling life from UV radiation.
在火星和我们太阳系的其他行星上没有氧气，这意味着这些行星也缺乏保护地表生物免受紫外线辐射的臭氧层。
Why has no one from other planets sent us a message?
为什么没有其他星球的人给我们发送信息呢？
In my opinion, there must be life on other planets though none has been discovered.
在我看来，虽然还没有发现，但在其他行星上一定存在生命。
Scientists have launched many spaceships to explore other planets in the solar system.
科学家们已经发射了很多宇宙飞船去探索太阳系的其他行星。
With so many stars in space, are we alone, or is there life on other planets in space?
太空中有这么多恒星，我们是唯一的吗，或者太空中其他行星上存在生命吗？
This job is to protect the earth from germs on things brought back from other planets.
这份工作是为了保护地球免受从其他星球带回来的东西上的细菌侵害。
In the future, we might see cities on the moon or even new human cultures on other planets.
未来，我们可能会在月球上看到城市，甚至在其他行星上看到新的人类文化。
I realized that the handrail would not come off, which meant we could no longer be able to replace the power supply and repair that instrument, which meant scientists could no longer look at the universe and find life on other planets.
我意识到，扶手不会脱落，这意味着我们再也无法更换电源供应和维修仪器，这意味着科学家们再也无法观察宇宙，在其他星球上寻找生命。
其他星球上的复制因子？
What will life consist of on other planets?
在其他的星球上，生命将由何组成？
Do you believe in life on other planets?
你相信别的星球上有生命吗？
Seven other planets also go around the sun.
此外还有七颗行星也围绕着太阳转。
Some day we ourselves may travel to other planets.
也许某一天人类能够踏上其他星球的土地。
How many other planets have taken a similar course?
有多少星球经历了类似的历程？
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