pneumatic grain elevator

例句：

1. 1.The pneumatic tire is lighter and more durable than traditional tires.
   这种充气轮胎比传统轮胎更轻、更耐用。
2. 2.The pneumatic pump is designed to be easy to use and maintain.
   这种气动泵设计得易于使用和维护。
3. 3. The pneumatic tool is ideal for heavy lifting tasks.
   这种气动工具非常适合重物搬运工作。