P.p.factor p.p.
[医] P.P.因子, 抗糙皮病因子
🗣️ 情景例句
Near the Exit sign.
就在出口标志附近。
Doctors and lawyers are professional people.
医生和律师是专业人员。
Who but Jack would do such a thing?
除了杰克谁会做这种事呢？