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	precalcs precalculi precalculus precalculuses Precambrian Precambrian shield precambrians precancel precanceled precanceling precancellation precancellations precancelled precancelling precancels precancerous precapitalist precapitalists precaria precarial precarious precariously precariousness precariousnesses precarity

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