Uba
abbr. undenatured bacterial antigen 非变性的细菌抗原
🗣️ 情景例句
Matches.
火柴。
Try to be there by 8:15 the airport will be crowded.
尽量在8点15分以前赶到那里，到时机场会很拥挤的。
Do you want a chicken,Mrs. Bird?They 're very nice.
您要买只鸡吗，伯德夫人？这些鸡很好。