Polygarskite
水合硅酸铝镁矿
🗣️ 情景例句
I'm a student of the world; in other words I flunked out of high school.
我是社会学生，换句话说，我高中后就辍学了。
The roof has leaks in it,and the front step need to be fixed.
房顶有漏缝，并且前面台阶需要修理。
I don't like to be late. We begin classes at 8:00.
我不喜欢迟到。我们八点上课。