同根派生 foot hold相关词英汉例句At the precise moment that I put my foot on the step, the bus started.恰恰就在我登上公共汽車踏板的時候,車子開動了。We also can change the pitch of each timpani by pressing our foot on a pedal.我們同時可藉由用腳踩踏板來改變音調。foot hold更多例句