So, this is a photograph that someone took on the internet of a real world receipt from a restaurant somewhere I think in the UK and I think the take away will perhaps be cleared pretty fast.

这是某人在网上得到的照片,其中是英国,一个餐厅的收据,我们看一看。

哈佛公开课 - 计算机科学课程节选

So, it looks like the curry and some other items were really precisely defined in terms of price and this is of course has generated this receipt - by some computer, some cash-- cash register and they just didn't account for the inherent imprecision so here is a perhaps real world incarnation of that.

看起来咖喱,和其他一些东西都被明确地定价,这当然可以,通过计算机-,收银机生成这份收据，而且它们并不对,其内在的不精确性负责,这可能就是现实世界中的一个典型。

哈佛公开课 - 计算机科学课程节选