The bats are balancing the need to wait until dark, when day-flying hawks stop hunting, and the need to catch the insects when they are most plentiful, right at dusk.

弗里克指出，蝙蝠在平衡两种需求，一种是等待夜幕的降临，为了躲避那些白天捕食的鹰；另一种是捕捉昆虫的需求，它们往往在傍晚很丰富。

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You can also wait until the optimal times for video lighting which are at dusk and dawn when the sun is low and colors are their truest.

另一个消极的做法是等待傍晚或者阳光昏暗这些物体展现他们真实色彩的最佳摄像时机。

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