我今天感觉不太舒服，可能需要休息。

I'm feeling ___unwell today and might need to rest.

我妹妹身体不适，所以我得在家陪她。

My sister is ___unwell, so I have to stay home with her.

有几名员工身体不适，没能来上班。

Several employees were ___unwell and couldn't come to work.