Schungite
[地质]次石墨
🗣️ 情景例句
What is language for?
语言到底是用来干什么的？
Besides the required courses, I'm taking an elective in the Lab Science.
除必修科目外，选修科目我选了实验科学。
I don't want to share a room with anybody. I want my own room.
我不想和任何同住，我想要自己住。