P. p. d.
[医] 精制蛋白衍化物(结核菌素)
🗣️ 情景例句
Did you watch the football game between Manchester United and Arsenal last night?
昨晚你看了曼联对阿森纳的足球比赛吗？
I appreciate your helping me.
感谢你的帮助。
Yes. Could you ask him to call me, please?
可以。请你告诉他给我打个电话，好吗？