Colloidality
胶性, 胶度
🗣️ 情景例句
Robbie, I want you to meet
Robbie，我要你见过
What's the longest river in the United States?
在美国最长的河是什么？
Last week, a group of Class 3 students decided to go to the museum in the centre of the town.
上星期，3班的一群学生决定去参观位于城镇中心的博物馆。