pneumatic clay

例句：

1. 1. The car is pneumatic, so it can be easily refilled with air.
   这辆车是气动的，所以可以用空气轻易地重新充气。
2. 2. The balloon was pneumatic, and it floated up into the sky.
   那个气球是气动的，它飘到了天空中。
3. 3. The airbags in the car are pneumatic, providing a cushion for the driver in case of an accident.
   汽车中的气囊是气动的，为驾驶员在发生事故时提供缓冲。