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水蛭(zhì)又叫蚂蟥,是一种喜欢吸血的动物,它一叮位人就会猛吸血,直到吃饱为止。因此,水蛭没有给我们留下什么好印象。
Leech (lei), also known as leech, is a kind of animal that likes to suck blood. Therefore, leeches did not give us any good impression.