Uba
abbr. undenatured bacterial antigen 非变性的细菌抗原
🗣️ 情景例句
I can organize my time efficiently.
我可以有效地安排时间。
Don't be a copycat!
别有样学样。
Yes, it was. But it's much colder today.
是的，昨天冷。但是今天更冷。