pneumatic tri-pen recorder

例句：

1. 1. The pneumatic tire is designed for vehicles that need to move over rough terrain.
   这种充气轮胎是为需要在崎岖地形上行驶的车辆设计的。
2. 2.The pneumatic pump is used to inflate tires on bicycles.
   这种气泵用于给自行车的轮胎充气。
3. 3.The pneumatic tube was invented by a Frenchman named Charles Blondel in the 19th century.
   这种气动管是由法国名叫查尔斯·布朗德尔的人在19世纪发明的。