Etfe
[医][=ethylene-tetrafluoro-ethylene]乙烯四氟乙烯
🗣️ 情景例句
Where did you receive your master degree?
你在哪里获得硕士学位的？
Do you always fold the clothes after you bring them in off the line?
你把衣物从晒衣绳收下来时，会把它叠好吗？
Mum, this is my teacher, Miss Gao.
妈妈，这位是我的老师，高小姐。