单词	back shaft
释义	back shaft noun 1 : a countershaft driven by a back gear 2 : any shaft placed at the back of a machine Word History First Known Use 1847, in the meaning defined at sense 1
随便看	speldering spelders spelding speldings speldins speldring speldrings speldrins speldron spelds spelean speleological speleologies speleologist speleologists speleology speleothem spelican spelk spelks spell spell check spell checks spell curtains for spell disaster

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