Fluomethane
氟代甲烷
🗣️ 情景例句
The match was postponed to the following Saturday because of bad weather.
比赛因天气不好而延期到下个星期六进行。
Please try it.
请试试看。
Hello, Jim! Help yourself to a cake.
你好，吉姆！请随便吃糕点。