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	show no mercy show no sign of show no sign/signs of show no signs of show of hands show off show one the door show one's cards show one's face show one's hand show one's mettle show one's stuff show one's true colors show oneself show out show pipe show promise show ring show round show runner show runners show signs of show someone show someone a trick or two show someone around

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