abbr. 概率分部函数（Probability Distribution Function）
🗣️ 情景例句
My friend is not gay; he's straight.
我的朋友不是“基佬”，他很正常。
We aren't happy with the present situation.
我们不满足于现状。
The lady was dressed in a blue coat and a large, funny hat.
那位妇女穿着一件蓝色的大衣，戴着一顶大而滑稽的帽子。