aerated grit chamber

例句：

1. 1. Theair in the room is so stalethat it's hard to breathe.
   房间里的空气太闷了，呼吸都困难。
2. 2.The engineer aerated the soil beforeplanting the trees.
   工程师在种植树木之前给土壤通气。
3. 3. The balloon was filled withhelium and then aeratedto make it float higher.
   这个气球充了氦气，然后进行了通气，使它飘得更高。