Hayley教口语,“一次性的”用英语怎么说?

所属栏目:英语口语    2023-04-28      

one-off something that happens or is made or done only once 一次性的事物;只发生一次的事 A: Why are you home from school early? 你为什么这么早放学回家了? B: The teacher let us finish half an hour early today, as a one-off. 破天荒头一次,老师今天让我们提前半小时下课。