Bfk
abbr. Becker-Fulde-Keller theory 贝克尔-富尔德-凯勒理论; bovine fetal kidney 牛胎肾
🗣️ 情景例句
Who's the patient?
病人是谁？
I'm sorry, sir. I didn't mean it.
对不起，老兄，我并没有恶意。
How do you spell that, please?
怎么拼写？