Fluorgypsum
氟石膏
🗣️ 情景例句
Welcome to China. May I have a look at your customs declaration?
欢迎来中国。我可以看一下您的入境申请报表吗？
You'll pay for this.
我会找你算帐！
This is wonderful, I said.
“这太奇妙了，”我说。