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	swamp pine swamp pink swamp poplar swamp post oak swamp potato swamp privet swamp quail swamp rabbit swamp rattler swamp red bay swamp robin swamp rose swamp rose mallow swamp sassafras swamp saxifrage swamp silkweed swamp Spanish oak swamp sparrow swamp spleenwort swamp spruce swamp squawweed swamp sumac swamp sunflower swamp tea swamp thistle

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