P. p. d.
[医] 精制蛋白衍化物(结核菌素)
🗣️ 情景例句
Whatever you think is right for you is right for us.
你认为对你是好的对我们来说也是好的。
What do you think will be a fair price for your product?
你认为你们产品的价格公平吗？
like the cooling of a hot kettle or the wearing-out of a pair of shoes.
就像一壶热水迟早会凉下来，一双鞋渐渐会磨破一样。