Etfe
[医][=ethylene-tetrafluoro-ethylene]乙烯四氟乙烯
🗣️ 情景例句
Michelle is very grown up for a ten-year-old, huh?
以一个十岁的孩子来说 Michelle很成熟 ，是吗？
Why was only he exempted from work?
为什么只有他不必工作呢？
If you think it is necessary.
如果你认为有这必要的话。