Mclg
abbr. maximum contaminant level goal 最大污染浓度指标
🗣️ 情景例句
You must be joking.
你肯定是在看玩笑。
When an opportunity is neglected,it never comes back to you.
机不可失，时不再来；机会一过，永不再来。
You did right.
你做得对。