单词	Cephalaspida
释义	Cephalaspida plural noun Ceph·​a·​las·​pi·​da -pədə : a class or lesser division of primitive extinct vertebrates including Cephalaspis and a few related genera of Devonian ostracoderms Word History Etymology New Latin, from Cephalaspis + -ida
随便看	knock one's socks off knock oneself out knock over knock poker knock rummy knock sideways knock silly knock some sense into someone knock some sense into someone's head knock someone down a peg knock someone flying knock someone for six knock someone off (his stride knock someone off her pedestal knock someone off her) stride knock someone off his pedestal knock someone sideways knock someone's block off knock someone's head off knock someone's head/block off knock someone's socks off knock something on the head knock spots off knock the stuffing out of knock the wind out of

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