Didymolite
[矿]钙蓝石
🗣️ 情景例句
No problem, Grandpa.
没有关系爷爷。
Suppose you couldn't go on the trip.How would you feel?
假定你不能继续你的旅行，你将感觉如何？
One case concerns and eleven-year-old schoolgirl, Vera Petrova,
其中有一例谈到有一个名叫维拉。彼托洛娃的11岁学生。