Ecf
abbr. electrochemical fluorination-process 电化氟化法; extracellular fluid 细胞外液
🗣️ 情景例句
Remember, the number 1 train. The uptown platform.
记住，搭一路车，在北月台 。
Loftiest trees most dread the thunder.
树大招风。
But then another question came up.
但是另一个问题出现了。