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单词	roller bearing
释义	roller bearing noun : a bearing in which the journal rotates in peripheral contact with a number of rollers usually contained in a cage — compare ball bearing [roller bearing: 1 outer race, 2 cage, 3 roller, 4 inner race]
随便看	band spectrum bandstand bandstration bandstring bandtail band-tailed band-tailed pigeon band-tail pigeon band tool bandung bandura bandurist bandurria b and w bandwagon band wheel bandwidth bandworm bandy bandy bandy-bandy bandy-leg bandy-legged bandylite bandyman

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