abbr. 概率分部函数（Probability Distribution Function）
🗣️ 情景例句
I think I've had enough of that sandwich.
我想我已经吃够了三明治。
One butcher does not fear many sheep.
屠夫不怕羊多。
I see, we'll look for them on our end.
哦，我们这边会找找看。