chest bellows

例句：

1. 1. The old man used to use a chest bellows to blow air into his lungs during his long walks.
   这位老人过去常使用一个胸部风箱，在漫长的散步中向肺部吹气。
2. 2. During the construction of the new bridge, engineers relied on chest bellows to power their heavy equipment.
   在新桥的建设过程中，工程师们依靠胸部风箱来驱动他们的重型设备。
3. 3.The firefighters used chest bellows to ventilate the smoke-filled room and keep it from becoming too stuffy.
   消防员们使用胸部风箱来通风这个充满烟雾的房间，防止它变得过于闷热。