Central moment
[计] 中心矩
🧩 词语组成解析
🗣️ 情景例句
He wrote some nice articles on Mom
他写了一些介绍妈妈的好文章
Truth is (or lies) at the bottom of the decater.
酒后露真言。
That was quick! she said. Have you finished already?
“你真快！”她说，“你已经买完东西了吗？”