Normal concentration
[化] 规定浓度; 当量浓度
🧩 词语组成解析
🗣️ 情景例句
We're in the country.
我们在乡村。
The morning sun never lasts a day.
好景不常。
Bonny, take the next dirt track on the left. That will take us down into the valley.
波尼，沿着左边的下一个土路走。我们将沿路而下进入河谷。