Given that there is a living to be made at night, and given that alternative daytime trades are thoroughly occupied, natural selection has favoured bats that make a go of the night-hunting trade.

考虑到夜晚也可以生存，并且可供选择的白天的“交易”完全被占用，它们自然选择偏爱那些成功在夜间进行捕食“交易”的蝙蝠。

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The pool, in this case, acts as the court at the center of the house; furthermore, it also acts as the reflector which reflects the natural light and lightens up the house during daytime.

此外，白天它还充当反映了自然光线的反射器，把光线带进室内，使房子更加明亮。

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Given that there is a living to be made at night, and given that alternative daytime trades are thoroughly occupied, natural selection has favored bats that make a go of the night-hunting trade.

考虑到夜间可以生存，并且其他白天的交易已经被全部占有，自然选择偏爱可以成功在夜间捕食的蝙蝠。

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