Normal concentration
[化] 规定浓度; 当量浓度
🧩 词语组成解析
🗣️ 情景例句
All I need is some paint and a canvas, and I'm happy.
我只想要一些颜料和画布，这样我就会很满足。
A smart coat is a good letter of introduction.
人要衣装，佛要金装。
Our next obstacle was a shallow pool of water about half a mile across.
下一个障碍是一片约半英里宽的浅水塘。