The orbiter was commissioned to search for evidence that water persisted on the surface of Mars for a substantial period of time - long enough to provide a habitat for life.

这颗轨道飞行器的任务是在火星表面寻找水的证据，而且水量必须足以为生命栖息地维持相当长一段时间。

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The night sky outside the window was the habitat of those silver stars, whose light was thrown onto the surface of the blue sea.

窗外的夜空点缀着银色的星星，在蓝色的海面留下属于它的冷光。

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The night sky outside the window was the habitat of those silver stars, whose light was thrown onto the surface of the blue sea.

窗外的夜空点缀着银色的星星，在蓝色的海面留下属于它的冷光。

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