Uba
abbr. undenatured bacterial antigen 非变性的细菌抗原
🗣️ 情景例句
My parents expect nothing but high marks.
我父母就希望我考高分。
This material feel hand, How does that materoal feel?
这种布料感觉起来很硬，那块料子如何呢？
Do you have a calling card?
您有名片吗？