“齿”造句

将牙线在齿间来回拉动。
Draw the floss backwards and forwards between the teeth.

一种棘齿装置把线从线轴转到梭心上。
A ratchet mechanism transfers the thread from spool to bobbin.

研究人员观察到一只鸟把一只啮齿动物钉在一棵仙人掌上。
Researchers observed one bird impale a rodent on a cactus.

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