Ersbyite
钙柱石
🗣️ 情景例句
Well, do we have a date?
怎样 ，我们算是约定了吗？
Excuse me. Could you please tell me how to get to the station?
劳驾，请问到火车站去怎么走？
If we could actually see the path described by a particle,such as a sand grain in the rock,
假如我们真能看到的运动轨迹，诸如岩石中一个沙粒分子