P.p.factor p.p.
[医] P.P.因子, 抗糙皮病因子
🗣️ 情景例句
You go ahead with the formalities. I'll see to the heavy luggage.
您先去办手续，我来帮您照看大件行李。
Do not run too fast after gain.
不要见利就拼命追。
On motorways you can, at least, travel fairly safely at high speeds,
在公路上还好，你至少能以相当快的速度安全地向前行。