Scientists think this is the plants' way to prevent the spread of any tree diseases and make life more difficult for leaf-eating insects like caterpillars.

科学家认为，这是植物防止树木疾病传播的方法，并给像毛毛虫之类的食叶昆虫制造些生存上的困难。

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At the bottom of each slippery-sided leaf is a pool of water into which unlucky insects fall and drown.

猪笼草每个滑面叶子的底部都是一个水池，倒霉的昆虫落进去就会被淹死。

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Soon, a leaf fall, cover the body in the small insects, worms suddenly felt incredibly hard, that the devil came, wanted to eat it, scared cold sweat.

不一会儿，一片树叶落下来，盖在了小虫子的身上，虫子顿时感到天昏地暗，以为魔鬼来了，想吃了它，吓得直冒冷汗。

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Massive application of pesticides has meanwhile extinguished some pests and insects while letting others thrive, including the American bollworm, an unpleasant cotton blight, and rice-leaf folder.

ECONOMIST: Punjabis are poisoning themselves