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
I can't answer that one.
我回答不出那个问题。
He who cannot hold his peace will never live at ease.
嘴巴不紧，生活不宁。
Where?
在哪儿？