Uba
abbr. undenatured bacterial antigen 非变性的细菌抗原
🗣️ 情景例句
Every cloud has a silver lining.
乌云背后是银边，否极泰来。
How old?
多老？
I can't afford to go to a restaurant every day.
每天都去餐馆吃饭，我真是支付不起。