P.p.factor p.p.
[医] P.P.因子, 抗糙皮病因子
🗣️ 情景例句
Hi, this is Tony, I have a flat tire, could you come and pick me up?
你好，我是托尼，我的车爆胎了，你能来接我吗？
May I accompany you tonight?
今晚我可以和你在一起吗？
has spent his lifetime studying active volcanoes and deep caves in all parts of the world.
花了毕生的精力来研究世界各地的活火山和探洞。