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
No. I'm sorry, but we can't send out our tow truck to get you.
不能，真对不起，我们不能派拖车来。
He is playing on the merry-go-round in the park.
他正在公园里骑旋木马。
He did not see the bag until it was too late.
等他看见袋子时已经太晚了。