Mathematical expectation
[计] 数学期望
🧩 词语组成解析
🗣️ 情景例句
Your family or the public?
你的家人还是公众
Step by step the ladder is ascended.
登梯需要逐级登。
Eventually the turtle has been butted all the way down to the floor of the tank.
这只海龟最终被撞到池底。