In the absence of gravity, there would be no air around the earth.

没有重力，地球周围就没有空气。

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So a spring always allows you to measure, uh, a mass even in the absence of gravity.

因此弹簧，一直可以用来测量，哦，一个物体，不管重力是多少。

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The boundary particle theory "looks like " a theory of particles in the absence of gravity .

边界上的粒子理论「看起来」像是一个不含重力的粒子理论。

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This barred scientists from using microplates in space, where researchers prize the absence of gravity for its insights into how crystals, bacteria and drug agents behave.

FORBES: Doing Science In Zero-G? You'll Have To Go Through Nanoracks

But the biggest challenge for those reared on downhill skiing and unused to the pulse-raising effects of working against gravity is the absence of any energy-saving tow-lifts.

BBC: Cross-country skiing in Washington��s Methow Valley

Let me start off by saying one of the nice things about where we physically are right now is that we remove the effects of gravity, so we're able to do experiments that involve the effect of gravity basically on Earth as we look at what happens with the absence of it.

WHITEHOUSE: President Obama's call to the International Space Station