Fluocarbon
氟代烃
🗣️ 情景例句
Do you know the phone number of the restaurant?
知道那家餐厅的电话号码吗
Excuse me, how can I get to the bus station?
对不起，汽车站怎么走？
The tent was full of water! They all leapt out of their sleeping bags and hurried outside.
原来帐篷里到处都是水！他们全都跳出睡袋，跑到外面。