Fluorine(-containing)rubber
[化] 氟橡胶
🗣️ 情景例句
This has been a hard course for me.
这门课对于我来说很难。
True love kythes(=shows itself)in time of need.
患难显真情。
It's much cheaper to camp than to stay in a hotel.
露营比住旅馆要便宜多了。