基本解释n.曲柄同根派生 crank-arm相关词英汉例句用作名詞 (n.)My car's so old that I have to crank it.我的車太舊了,我衹好轉動曲柄來發動它。The pedal of a cycle is attached to a crank.自行車的踏板與曲柄相連。crank-arm更多例句