Dawsonite
[矿]片钠铝石
🗣️ 情景例句
and from the University of Michigan in 1956.
一九五六年从Michigan大学毕业。
This is my second year of college, I'm a sophomore.
这是我上大学的第二年，我是二年级学生。
I am afraid that l have to go.
我要走了。