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rachet

n.棘轮，棘齿;救护车
v.安装棘齿于……；把……造成棘齿形，于……作棘齿，在……上刻锯齿

rachet

rachet

英英释义

noun

mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction: Synonym: ratchet ratch

数据来源：WordNet

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