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
running for the school board.
竞选联合校董会董事。
A road of a thousand miles begins with one step.
千里之行始于足下。
I'll have tea,please.
茶吧。