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
She had to work her way through law school.
她必须半工半读学法律。
I didn't catch that, Could you go over that again?
我没有听清楚，请你再说明一下好吗？
Two ice cream please.
请拿两份冰淇淋。