underwear
n. 内衣，衬衣
例句
She packed one change of underwear.
她打行李时带了一套换洗的内衣。
《牛津词典》
For Christmas my brother and I got new underwear, one toy and one book.
作为圣诞礼物，我弟弟和我得到了新内衣、一件玩具和一本书。
《柯林斯英汉双解大词典》
All of my socks and underwear are plain and mostly black.
我所有的袜子和内衣都是纯色而且大部分是黑色的。
