She handed over a form, then bobbed down again behind a typewriter.她递过来一张表格，随后又立刻埋头在打字机后面忙活起来。The girl bobbed politely at him.那姑娘礼貌地向他行了个屈膝礼。A hostess stood at the top of the steps and bobbed her head at each passenger.一...
She handed over a form, then bobbed down again behind a typewriter.她递过来一张表格，随后又立刻埋头在打字机后面忙活起来。I bobbed to the surface and gasped a lungful of air.我浮上水面，深吸了一口气。The raft bobbed along more quietly.小木筏更加平静地漂浮向前。...