Tetrafluoroethylene
四氟乙烯
🗣️ 情景例句
I lost.
我输了。
I really care for the students in my class.
我真喜欢人班上的学生。
Yes, my brother Bob is coming with me to the airport to see me off.
有，我兄弟鲍勃将和我一起到机场，送我上飞机。