初中英语必备词组：around the clock

　　around the clock 整日整夜；夜以继日

　　这个词组还是比较好记忆的，绕着时钟转圈，意思就是度过很多时间，联想一下就可以记住它的意思了。

　　If you do something around the clock, you do it all day and all night.

　　【例句】

　　We worked around the clock to get the job finished on time. 我们整日整夜地工作以确保工作准时完成。

　　句子翻译

　　She leaves the air-conditioning on around the clock, which is very expensive.