They can't regenerate like an earthworm or crawl like a snake, but they have tiny, dagger-like needles inside their mouths that some of them use to spearfish their prey and suck out the insides.
它们不能像蚯蚓一样再生， 也不能像蛇一样爬行，但它们的嘴里有细小的、像匕首一样的针， 其中一些用它们来用矛刺猎物并吸出内脏。