单词	safety catch
释义	safety catch noun : a device in an elevator or hoisting appliance to ensure safety from falling in case the mechanism fails to operate properly Word History First Known Use 1952, in the meaning defined above
随便看	Dipneumones dipneumonomorph Dipneumonomorphae dipneumonous dipneust dipneustal Dipneusti dipneustid dipnoan dipnoans Dipnoi dipnoid dipnoies dipnois dipnoous dipode dipodic dipodid Dipodidae dipodidaes dipodies Dipodomys dipodomyses dipody dipoga

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