霍金的主要忧虑是一队外星人飞船舰队可能会突然出现，想要将地球上储量丰富的矿藏洗劫一空。
Hawking's main concern was that a fleet of alien spacecraft could turn up wanting to strip mine the Earth for its bountiful resources.
外星人的太空舰队已经接近并正处于质子匪徒中枪距离，并存在着许多致命的小行星直行。
The Alien space fleet has approached and are at proton gun shot distance and there are numerous deadly asteroids straight ahead.
在1854年，一架外星人的侦察机降落在地球，这个外星生物在寻找食物和水，一旦让它发现了这些他们所需要的东西，它就会立刻通知其它外星舰队入侵地球。
An alien scout lands on earth in the year 1854. The creature is searching for water and food. Once it finds what it needs, it will call in an invasion fleet.
在1854年，一架外星人的侦察机降落在地球，这个外星生物在寻找食物和水，一旦让它发现了这些他们所需要的东西，它就会立刻通知其它外星舰队入侵地球。
An alien scout lands on earth in the year 1854. The creature is searching for water and food. Once it finds what it needs, it will call in an invasion fleet.
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