Prepump
前级泵, 预抽泵
🗣️ 情景例句
She exchanged a few words with the foreigner.
她和那个外国人交谈了几句。
Please tell him to stop jumping up and down.
请告诉他不要调上跳下。
You'd better let her alone.
你们最好是让她一个人呆会儿。