Percentage concentrition
[化] 百分浓度
🧩 词语组成解析
🗣️ 情景例句
You may be offered coffee, and then you should immediately announce the reason for your visit.
他们会给你冲咖啡，然后你应该尽快说明来意。
Why are you crying?
你为什么哭？
There were six million visitors in all,
参观的人数总共是600万。