pneumatic silence

例句：

1. 1. The pneumatic tire has a high load capacity and is widely used in construction vehicles.
   这种充气轮胎具有很高的载重能力，在建筑车辆中被广泛使用。
2. 2. The pneumatic tube was invented to deliver mail quickly and efficiently.
   气筒的发明是为了快速且高效地传递邮件。
3. 3. The pneumatic tool can be easily adjusted to fit different sizes of holes.
   这种气动工具可以轻松调整以适应不同大小的孔洞。