基本解释n.曲柄同根派生 crank-arm相关词英汉例句用作名词 (n.)My car's so old that I have to crank it.我的车太旧了,我只好转动曲柄来发动它。The pedal of a cycle is attached to a crank.自行车的踏板与曲柄相连。crank-arm更多例句