Bdf
[医][=B cell differentiation factor]B细胞分化因子
🗣️ 情景例句
How'd you do it?
是如何办到的？
Do you live across from the Public Hall?
你在大会堂对面居住吗？
The stream wound its way across the field and then flowed right under their tent!
那小溪弯弯曲曲穿过田野，然后正好从他们的帐篷底下流过去。