abbr. 概率分部函数(Probability Distribution Function)
🗣️ 情景例句
We are.
我们是。
What a surprise, the dinner did not taste bad after all!
很出人意外,这顿晚餐不是很好吃么?
It is now standing in the corner of our sitting room.
它现在就站在客厅的一个角落。