胸革带

例句：

1. 1. He wore a chest brace to protect his injured arm.
   他戴着胸带来保护他的受伤的手臂。
2. 2. She put on a vest before going out for the evening.
   她外出前穿上了一件背心。
3. 3. The man was wearing a vest when he entered the room.
   那男人进入房间时穿着背心。