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underwear; underclothes; lingerie; chemise; singlet
冬用の暖かい肌衣を三枚買った。
I bought three warm winter undershirts.
綿素材の肌衣は汗を吸いやすくて快適だ。
Cotton underwear absorbs sweat well and is comfortable.
肌衣を毎日替えるのは衛生上の基本だ。
Changing your underwear daily is basic hygiene.