deep bellows

例句：

1. 1. The deep bellows are usedto power the machine.
   深风箱用于给机器提供动力。
2. 2. The deep bellows were designed to improve efficiency.
   深风箱的设计是为了提高效率。
3. 3. The deep bellows are essential for maintaining the machine's performance.
   深风箱对于保持机器的性能至关重要。