They measured earthshine: sunlight that reflects off the earth, hits the moon and bounces back.

他们对地球的反照光进行了测量：太阳光被地球反射到月球，然后又反射回来。

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And as we've seen repeatedly over the past eight years, we have a flexible and resilient system that absorbs challenges, makes corrections, and bounces back.

我们回头看看过去的八年，我们的灵活多变，弹性十足的体制化解挑战，纠正错误，恢复经济。

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It's a nearly elastic collision and it bounces back from the wall.

它近似于弹性碰撞，它从墙壁反弹。

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How confident is DelVecchio that his stock choices will be winners once the market rallies and bounces back up?

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Now, after bankruptcy, GM is poised to grow again, if and when the market for new cars and trucks bounces back.

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The pointer slips off the spring and the spring bounces back into shape.

FORBES: Desktop fingerprints