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
The newspapers don't come out till about ten o'clock.
报纸要差不多十点钟才出来。
Do you have any questions at this point?
就这一点你们还有什么问题吗？
Are there any boats in the picture?
画里面有船吗？