P.p.factor p.p.
[医] P.P.因子, 抗糙皮病因子
🗣️ 情景例句
I don't know.
我不知道。
He that is full of himself is very empty.
自满的人是很空虚的。
Towards evening, the boat struck a rock and the girl jumped into the sea.
天将黑时，小船撞在了一块礁石上，姑娘跳进了海里。