如果没有重力帮助空气循环，你呼出的二氧化碳会在你头顶周围形成一个看不见的云状物。
Without gravity to help circulate air, the carbon dioxide you exhale has a tendency to form an invisible cloud around your head.
如果没有重力，就不会有空气和任何声音。
Without gravity there will be no air and no sound of any kind.
如果没有重力，我们的脚就不能站稳在地面上。
When there is no gravity, our feet no linger stay on the ground.
如果没有重力，我们的脚就不能够在地面上站稳。
When there is no gravity, our feet can no longer stay on the ground.
如果没有重力，我们的脚就不能再站稳在地面上。
When there is no gravity, our feet no longer stay on the ground.
如果在板子上没有电荷，这些液滴就只会由于重力掉下。
If there is no charge on the plate, these droplets will simply fall under gravity.
如果没有摩擦力，如果没有其他力，只有重力。
If there is no friction, if there are no other forces, only gravity.
那里没有重力，所以如果树上有苹果，也不会掉下来。
While it's up there, it will be experiencing no gravity, so if it had an apple on it, the apple wouldn't fall.
那里没有重力，所以如果树上有苹果，也不会掉下来。
While it's up there, it will be experiencing no gravity, so if it had an apple on it, the apple wouldn't fall, " said Sellers.
空间站里没有重力，人会不会越长越高？如果有个宝宝出生，是否会长得比姚明还高？
Will humans grow taller and taller in the space station without gravity? If a baby born there, will he grow taller than Yao Ming?
如果你在设计一架飞机，显然没有重力会容易得多，但是那也就不是飞机了。
If you're a designing an airplane, it would be a lot easier without gravity as a concern, but hey, it's not going away.
利用现代石油勘探手段寻找潜在的石油圈闭时，如果没有地磁、重力和地震勘探，是不可想象的。
Modern petroleum exploration is unthinkable without the AID of magnetism, gravity, and seismic surveys in finding potential petroleum traps.
但是如果没有猛禽们对克服重力的上升气流敏锐的判断力，人们常常错失良机。
But without a raptor's sharply honed sense for the gravity-defying updrafts, humans are beholden to chance.
如果你自己真的把水上行走当回事，你就必须确定没有任何东西…重力，只会说不的人…没有任何东西可以阻止你。
If you're serious about walking on water, you must decide that nothing... not gravity, not a group of naysayers, nothing... can stop you!
如果你自己真的把水上行走当回事，你就必须确定没有任何东西…重力，只会说不的人…没有任何东西可以阻止你。
If you're serious about walking on water, you must decide that nothing... not gravity, not a group of naysayers, nothing... can stop you!
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