单词	safety bicycle
释义	safety bicycle noun : a bicycle made with equal or nearly equal wheels usually 28 inches in diameter and driven by pedals connected to the rear wheel by a multiplying gear Word History First Known Use 1876, in the meaning defined above
随便看	nim tree nimb nimbated nimbed nimbi nimbies nimble nimble Kate nimble will nimbleness nimblenesses nimbler nimblest nimblewilles nimblewills nimblier nimbliest nimbly nimbo- Nimboran nimborans nimbose nimbostrati nimbostratus nimbs

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