Mclg
abbr. maximum contaminant level goal 最大污染浓度指标
🗣️ 情景例句
Oh. Oh, where did you get that?
噢。噢， 你们从哪儿弄来的？
You have to study English, don't you?
你必须学英语，不是吗？
The letter x stands for an unknown number.
字母x代表未知数。