1、You look a bit off colour today
你今天的臉色不太好，

2、She has been off colour recently.
她最近氣色一直不好。

3、Doctor:Right. Well, we'll just have a look. Uh, Sir, has he been a bit off colour lately.
醫(yī)生：好。我們就來看一看。唔，先生，他近來是不是精神有點不好（身體有些不舒服）

off colour翻譯