Bdf
[医][=B cell differentiation factor]B细胞分化因子
🗣️ 情景例句
We'll be heading back late in the afternoon.
我们会在黄昏时打道回府。
Up to you.
你说了算。
I never catch anything -- not even old boots.
我什么东西也未钓到过 -- 就连旧靴子也没有。