undressed

He was still undressed when the unexpected guests rang the doorbell early on Sunday morning.

(Chinese) 周日清晨不速之客按响门铃时，他还没穿好衣服。

The patient was asked to get undressed and put on a hospital gown before the physical examination.

(Chinese) 病人在体检前被要求脱掉衣服并穿上医院的袍子。