作为礼物，她为新婴儿带来了一件小小的汗衫。

As a gift, she brought a tiny ___undershirt for the new baby.

他总是在衬衫下面穿一件汗衫以保持舒适。

He always wears an ___undershirt under his dress shirt to stay comfortable.

冬天，一件厚汗衫在外层衣服下提供额外的温暖。

In winter, a thick ___undershirt provides extra warmth under your outer layers.