单词	leadscrew
释义	leadscrew noun lead·​screw ˈlēd-ˌskrü  : a threaded rod on which a mechanism travels and can be positioned precisely Word History First Known Use 1875, in the meaning defined above
随便看	rain blows/punches on rain boot rain cape rain cats and dogs rain check rain cloud rain crow rain dance rain date rain doctor rain dove rain forest rain gage rain gauge rain gear rain glass rain insurance rain leader rain lily rain on someone's parade rain or shine rain out rain pie rain pipe rain print

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