Oldhamite
陨硫钙石
🗣️ 情景例句
Is this your very first advanced aerobics class?
这是你第一次上有氧运动高级班吗？
The restaurant is on the second floor.
那餐厅在二楼。
he always insisted that it should be written out in full.
但他还是坚持要求将信的全文写在信纸上。