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
Are all the classes within walking distance?
所有的教室都在步行范围之内吗？
We really can't discount the price more than six percent.
我们真的无法提供超过6%的折扣。
It was one of the biggest buildings of all time and a lot of people from many countries came to see it.
它是有史以来最高大的建筑物之一，因此，人们从各个国家纷纷前来参观。