Difluoromethane
[化] 二氟甲烷
🗣️ 情景例句
Beijing exit 500m.
北京出口前面 500 米。
Friends are like fiddle-strings,they must not be screwed too tight.
朋友有如琴弦，不能上的太紧。
I'm going to put it here,in front of the window.
我准备把它入在这儿，放在窗前。