race的意思是“赛跑，竞争”，at race的意思是“(大城市里为财富、权力等的)疯狂竞争，你死我活的竞争”。

【例句】
I had to get out of therat raceand take a look at the real world again.
我得从疯狂的竞争中解脱出来，重新审视真实的世界。

I had to get out of the rat race and take a look at the real world again.
我得从疯狂的竞争中解脱出来，重新审视真实的世界。