小一点的动物在落地时受到的力稍小于他们的体重。
Smaller animals hit the ground with a force proportionally lower than their weight.
在一项关于这种反射的实验中，研究者发现从15厘米高出落下，它们的叶子会在落地时合拢。
In an experiment on these reflexes, scientists notice that when dropped from 15cm. they would close when they hit the ground.
要把光被捕获在两维的曲线状表面上时，要求物体表面非常平滑，才足以把大部分光线干净利落地反射进油层而不是分散在所有的各个角度上。
For the light to be trapped in two dimensions, the object's surface needed to be smooth enough to cleanly reflect most of the light into the oil layer rather than scattering it at all angles.
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