Ecf
abbr. electrochemical fluorination-process 电化氟化法; extracellular fluid 细胞外液
🗣️ 情景例句
We'll come upstairs and get you in a little while.
我们待会儿就上楼来带你下去。
It drives me crazy.
它使我快要发疯了。
Tianjin will be cloudy and the temperature will...
天津多云，气温……