Fluorosis
[化] 氟中毒\\n[医] 氟中毒, 斑釉
🗣️ 情景例句
I'm sorry, I don't really understand.
对不起，我真的听不懂。
How much is the excess baggage charge?
超额行李费多少钱？
Please come in and sit down. But come to school earlier next time.
但下次要早点到校。