off colour
adjective /ˌɒf ˈkʌlə(r)/
/ˌɔːf ˈkʌlər/
(US English off color)
- [not before noun] (British English, informal) not in good health; looking or feeling ill
身体不舒服；气色不佳；不适 - [usually before noun] (especially North American English) an off-colour joke is one that people think is rude, usually because it is about sex
（笑话）粗俗的，下流的