Ecf
abbr. electrochemical fluorination-process 电化氟化法; extracellular fluid 细胞外液
🗣️ 情景例句
that I never could have done this book
我不可能完成这本书
I'm sure I'll be President.
我必定会当选总统。
If you want, you can change it for another one.
如果你要换，你可以换另一件。