According to the result of the inspection, they found that the insect contains a powerful drug, so local farmers were employed to catch the insects.

根据检查的结果，他们发现这种昆虫含有一种具有强大效力的药物，于是，当地的农民都被雇来抓虫子。

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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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They use their sharp teeth to force poison into the insects they catch for food.

它们用锋利的牙齿将毒液注入被捕食的昆虫体内。

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Smiley got him so the frog was catching flies, and he would catch one of those insects every time.

VOA: special.2009.08.29

The EcoBot II uses human sewage as bait to catch the insects.

CNN: Fly-eating robot powers itself