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.

不能蚯蚓一样再生， 也不能一样爬行，但嘴里有细小、首一样针， 其中一些用来用矛刺猎物并吸出内脏。