Eckermannite
[矿]氟镁钠闪石
🗣️ 情景例句
What did you tell Grandpa?
那你是如何对爷爷说的呢？
The party is a good opportunity for us to meet.
这聚会是我们彼此见面的好机会。
Mr. Smith is in charge of this class.
史密斯老师负责该班。