There are all kinds of different boxes or the purpose for those boxes are different.

搜索框的功能不尽相同,因为这些搜索框的目的也不同。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

You figure that most of those boxes are being eaten by somebody or another, there's some waste that you might calculate in, but there--error gets introduced there trying to estimate that, so you get a number on that.

你的计算中大部分食品,都被人们吃了,浪费的那些也要计算进来,但其中的误差,也要估算出来,最后得出一个数字

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选