Antifluorite
反萤石
🗣️ 情景例句
Our company has had a big business in Chinese arts and crafts.
我们公司经营大宗中国工艺品。
The doctor advised me to get plenty of exercise.
医生建议我多锻练。
I felt very nervous when I went into his office.
我走进他的办公室，感到非常紧张。