Ppf
[医][=pellagra preventive factor]抗糙皮病因子，维生素pp
🗣️ 情景例句
things ... bow ties.
玩意儿……领结。
I hope you can find your glasses soon.
我希望你很快就找到你的眼镜。
but that you caught the 8.25 which would still get you to work on time.
而是8点25分的，这次车同样能使您按时上班。