P. p. d.
[医] 精制蛋白衍化物(结核菌素)
🗣️ 情景例句
I'd love some cola, please.
请给我可乐。
Benefits please like flowers, while they are fresh.
恩泽让人欣喜，犹如鲜花使人心醉。
A sound made by tapping on the hull of a ship will be reflected from the sea bottom,
敲打船体所发了的声音会从海底传回来，