Airstone
[医]砂滤多孔石, 气石
🗣️ 情景例句
My wife died four years ago.
我妻子四年前去世了。
Well, thank you for coming.
唷，谢谢你的光临。
Babies of two months old do not appear to be reluctant to enter the water.
两个月的婴儿并未显得不愿意入水。