Iid
独立同分布[的]
🗣️ 情景例句
My new shoes hurt my feet ...
我的新鞋弄痛了我的脚……
We know not what is good until we have lost it.
有的时候不爱惜，失了以后空叹息。
Have you ever driven a BMW?
你有没有开过“宝马”？