n. 衬裤, 短衬裤
在线英汉词典

underpants的短语、例句：

underpants (also infml 口语作 pants) n [pl] short undergarment worn by men and boys covering the lower part of the body （男用）内裤, 衬裤
put on some/a pair of clean underpants 穿上一条乾净的内裤
He stood there in his underpants, ie not wearing anything else. 他只穿著内裤站在那儿. Cf 参看 knickers.