Uba
abbr. undenatured bacterial antigen 非变性的细菌抗原
🗣️ 情景例句
Too easy for you?
对 ，太容易了
You play the piano beautifully.How much do you practice every day?
你完美地弹钢琴,你每天花多少时间练习？
He added that a student had dressed up as a policeman and was playing all sorts of silly jokes on people.
还对工人说，有个学生常装扮成警察无聊地同别人开玩笑。