在植物界有着一些特别敏感的植物,它们的叶子受到刺激会很快闭合。比如,用手轻抚含羞草,它的小叶就迅速折合,叶柄下垂,好像真有几分害羞似的。又如捕蝇草,它的叶子可以把“自投罗网”的昆虫迅速裹起来,最后“吞而食之”。这些植物的这种本领从哪里来? There are some particularly sensitive plants in the plant kingdom, whose leaves are stimulated to close quickly. For example, touching the mimosa by hand, its leaflets quickly fold, petiole drooping, as if really somewhat shy. Another example is the flytrap, its leaves can be “self-cast nets” insect quickly wrapped up, and finally “swallow and eat.” Where do these plants come from?