Piga
abbr. polymeric immunoglobulin A 多聚免疫球蛋白A
🗣️ 情景例句
They mentioned you as a good source of information.
他们说你消息灵通。
Don't be so stubborn!
你还嘴硬！
What colour's your new dress?
你的新边衣裙是什么颜色的？