环境遭到农药的污染，萤火虫对农药非常敏感，只要有一点点的农药，对萤火虫的幼虫来讲，都是莫大的一个伤害。
The environment has been polluted by pesticides. Fireflies are very sensitive to pesticides. If there is only a little pesticide, it's very harmful to the larvae.
环境遭到农药的污染，萤火虫对农药非常敏感，只要有一点点的农药，对萤火虫的幼虫来讲，都是莫大的一个伤害。
The environment has been polluted by pesticides. Fireflies are very sensitive to pesticides. If there is only a little pesticide, it's very harmful to the larvae.
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