Celestobarite
锶重晶石
🗣️ 情景例句
I don't know.
我不知道。
The tortoise wins the race while the hare is sleeping.
兔子睡大觉，乌龟跑第一。
Certainly. The woolen ones are hanging here, and the cotton ones are hanging there.
当然欢迎。这儿挂着的是羊毛衫，那儿挂着的是棉毛衣。