Spodiosite
氟磷钙石
🗣️ 情景例句
No. I never could, either.
不会 ，我也一直都不会。
I'm sorry. I can't make it on Tuesday.
对不起，星期二我无法参加。
The six students put their closed hands in front of them.
6个学生将握紧的手放在前面。