Bdf
[医][=B cell differentiation factor]B细胞分化因子
🗣️ 情景例句
Isn't there a conversation that we have to finish?
我们不是有话还没说完吗？
You have to be there half an hour before departure time.
你要在起飞前半小时到那里。
Oh good, it's Li Lei. Hi, Li Lei!
噢，是李磊，李磊你好！