Defluorinate
脱氟
🗣️ 情景例句
I care about the practical things.
我关心实用的事物。
One hour's sleep before midnight is worth three after.
午夜前睡一小时抵得上午夜后睡三小时。
People are always talking about 'the problem of youth'.
人们总是在谈论“青年问题”。