They exposed the creatures to a beam of directed blue light, as might come from certain bioluminescent predators, as well as to other stimuli such as passing shadows.

他们揭露了生物的蓝色光束，可能来源于某个会发光的食肉动物也可能是受到其他的刺激，如通过的阴影。

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Very often because of light and shade one can imagine some strange creatures hiding in the cave. It is the place where usually a turtle is seen.

由于光影的作用，人们常常可以想象一些奇怪生物多在洞中。这里经常能看到海龟。

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He did so by applying to fossils the principles of comparative anatomy, asking what light the body shapes of living animals could cast on the shapes of creatures from the past.

他将比较解剖学原则应用于化石上，探寻现存动物的体型是否有助于推断过去生物的体型。

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In this scientific yet accessible book, Laurent Keller, a professor of ecology at the University of Lausanne, and his co-writer, Elisabeth Gordon, shed light on how these extraordinarily complex creatures operate and what we can learn from them.

ECONOMIST: Lessons from ants