Ppf
[医][=pellagra preventive factor]抗糙皮病因子，维生素pp
🗣️ 情景例句
I don't care for a ranch type.
不爱平房。
No man loves his fetters be they made of gold.
即使脚镣黄金铸，无人爱上这刑具。
These objects, however, were different.
这些展品却使人大开眼界。