Ecf
abbr. electrochemical fluorination-process 电化氟化法; extracellular fluid 细胞外液
🗣️ 情景例句
Have a safe trip!
一路平安。
An education enriches your mind.
教育能充实人的头脑。
Manners are quite different from country to country.
各国的礼仪各不相同。