Etfe
[医][=ethylene-tetrafluoro-ethylene]乙烯四氟乙烯
🗣️ 情景例句
I'm sorry, I really don't know.
对不起，我真的不知道。
Some people believe in the Loch Ness monster.
有些人相信尼斯湖水怪是存在的。
He repaired his house.
他修理了他的房子。