Mlss
[医][=mixed liquor suspended solid]（有机物和活性污泥）混合液中的悬浮固体
🗣️ 情景例句
I'm glad to help.
我很乐意帮忙。
It doesn't seem like that.
似乎不象是那样。
I was waiting for the sound of the other shoe!
我一直在等待另一只鞋落地的响声！