Ecf
abbr. electrochemical fluorination-process 电化氟化法; extracellular fluid 细胞外液
🗣️ 情景例句
How much will it cost?
需要多少钱？
She's gone; my heart's broken.
她弃我而去；我心碎无声。
I felt very nervous when I went into his office.
我走进他的办公室，感到非常紧张。