单词	backing hammer
释义	backing hammer noun : a hammer with a broad claw at one end of the head and a flat head at the other end used in shaping the backbones of books Word History First Known Use 1818, in the meaning defined above
随便看	springboarding springboards springbok springboks springbuck springbucks Springdale springdans springe springed springeing springer springer spaniel springerle springers springes springest Springfield Springfield rifle Springfielder springfieldes Springfieldian springfields springfish springform

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