I think these extra pictures sometimes they're helpful, sometimes they just make the book cost a lot more.

我想这些补充的图片有时是有用的,有时仅仅是把书价抬高了一点

耶鲁公开课 - 基础物理课程节选

If we could do sort, then we saw, if we amortized the cost, that searching is a lot more efficient if we're searching a sorted list.

如果我们可以做排序，然后我们可以看到，如果我们分摊开支,在有序列表中搜索将会变得更高效。

麻省理工公开课 - 计算机科学及编程导论课程节选

They cost more and they take a longer time.

它需要花费更多金钱与时间

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Now we're doing the same for IT, using standards, taking things that are in what's this big bucket known as services and really encapsulating them in the form of services and products, but in a much more cost-effective way, using standards.

现在对于整个信息技术行业我们也采取这种方法，使用标准,通过服务,注入产品和服务，通过标准，提高成本效率。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选