Ally: Andy, 我最近生病了，不太舒服。

Andy: 那你可要好好休息。因为 “you are under the weather”。

“Under the weather” 这个词好像和天气有关，其实和天气并没关系，是指身体上感觉不舒服。生病了你可以说“I am not feeling well.” 但更加地道的说法是 “I am under the weather.”  

比如这几个例句：

Sally is feeling a little under the weather so be quiet and let her get more rest.

莎莉有点不舒服了，安静点让她多休息。

I’m feeling under the weather so I’m taking a day off. 

我今天不太舒服，所以我请一天假。

Andy: Ally, sorry to hear that you are under the weather. Hope you get better soon!

Ally: Thanks!