将该理论应用到行星这类球体的时候(在本例中，指火星)，质量给定的时候，表面重力与它半径的平方成反比。
When applied to a spherical body like a planet with a given mass (in this case, Mars), the surface gravity will be approximately inversely proportional to the square of its radius.
“闭嘴！”哈利大吼一声，用魔杖朝她一指，砰的一声，魔杖迸出红色的火星，帘子忽地合拢，她不做声了。
"Shut UP!" Harry bellowed, directing his wand at her, and with a bang and a burst of red sparks, the curtains swung shut again, silencing her.
这是一个天文术语，叫做肉眼可见，是指不借助任何设备就可看见，我们乘坐宇宙飞船可以到达火星。
It is in astronomical terms, Neil – it's visible to the naked eye – meaning without using instruments – and it's reachable by spacecraft.
小布什把临时的地下室当作工作室，叫“第二指挥部”。小布什说他已经掌握了围绕载人火星之旅的一些关键问题。
Working from the makeshift basement office he refers to as "Mission Control 2, " Bush said he has grappled with some of the major issues surrounding a manned mission to Mars.
小布什把临时的地下室当作工作室，叫“第二指挥部”。小布什说他已经掌握了围绕载人火星之旅的一些关键问题。
Working from the makeshift basement office he refers to as "Mission Control 2, " Bush said he has grappled with some of the major issues surrounding a manned mission to Mars.
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