cotton wadded undervest

例句：

1. 1. She wore a simple cotton undervest to keep warm in the cold weather.
   她穿着一件简单的棉质内衣套来在寒冷的天气中保暖。
2. 2. He put on his undervest before going out for a walk.
   他穿上内衣套出门散步。
3. 3. The undervest was made of soft cotton material and had a drawstring closure.
   内衣套是由柔软的棉质材料制成的，并且有一个拉链闭合。