Ecf
abbr. electrochemical fluorination-process 电化氟化法; extracellular fluid 细胞外液
🗣️ 情景例句
we can ship the goods one month ahead of time.
我们可以提前一个月起运。
I'm afraid I have bad news for you.
恐怕我有坏消息要告诉您。
No! O, not U!
是O，不是U。