abbr. 概率分部函数（Probability Distribution Function）
🗣️ 情景例句
Thank you so much for coming. Have a safe drive home.
谢谢你的光临。小心驾车回家。
Wash your mouth out with soap!
嘴巴放干净一点！
Before long, the noise dropped completely and the boat began to drift gently across the water.
没过多久，噪音便彻底消失，快艇开始在水面上慢悠悠地漂流。