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
He seems to be getting on very well at school.
他在学校似乎过得很好。
Feed sparingly and defy the physician.
饮食有节，医生绝迹。
Oh, dear! What's wrong?
噢，天哪！怎么啦？