Airstones
(airstone 的复数) [医]砂滤多孔石, 气石
🗣️ 情景例句
I've got to explain about it.
我得解释一下此事。
When the police arrived, I was doing the housework.
当警察来的时候，我在做家务。
Please let me check the bill.
请让我核对一下帐单。