Probability density
[计] 概率密度\\n[化] 概率密度
🧩 词语组成解析
🗣️ 情景例句
Hmm, interesting.
嗯， 有意思。
Write it on your heart every day is the best day of the year.
要记住，每天是一年中最好的一天。
A moment later, the Class 4 runner fell and hurt his leg, but he quickly got up and went on running.
过了一会儿，4班的运动员摔倒了，伤了腿，但是他很快爬起来，继续往前跑。