Unmanned aerial with more high speed mobility than the ordinary object, it usually works in a hostile space, where the working environment is very complex.

无人驾驶飞机具有超过普通移动物体的高速移动性，它通常工作于敌对的空间，所处的工作环境十分的复杂。

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In their different ways, both sea and space are equally hostile.

海洋和太空以它们不同的方式展现敌意。

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These minerals must have been produced by the quasar, Dr Markwick-Kemper argues, because their crystal structures would not survive long in the hostile conditions of outer space.

Dr Markwick-Kemper认为，这些矿物肯定是类星体产生的，因为在外太空它们的晶状结构很难长时间存在。

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Astronauts worked for longer periods of time in the hostile environment of space.

VOA: special.2009.07.01

They proved that people could survive the hostile environment of space.

VOA: special.2009.06.24

The U.S. should declare that it will take all appropriate self-defense measures and it would defend against use of space hostile to U.S. national security interest .

CENTERFORSECURITYPOLICY: Space power: What is at stake, what will it take

We can think of few challenges likely to pose a greater danger to our future security posture than that of adversaries seeking to make hostile use of space -- or to deny us the ability to dominate that theater of operations.

CENTERFORSECURITYPOLICY: AN OPEN LETTER TO PRESIDENT CLINTON

The environment of space is hostile to human beings.

CNN: Bush: 'It is time for America to take the next steps' in space