他的著作中，我最喜欢的包括《成本与选择》（Cost and Choice）和他的文集《经济学家应该做什么》（What Should Economists Do?），这个文集里包含了几篇所有经济学研究生都应该阅读的文章。
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与表单一起加载的还有成本列表和审批人列表实例，因此用户可以在采购流程中从列表中选择审批人。
The form is loaded with the instances of the cost and approver list, so that the user can select the approver from a list, in this procurement process.
这就是为什么我和其他人都认为真正的公众选择与私人投保进行竞争是极其重要的：否则，成本升高将轻而易举地渐渐将一切努力消逝殆尽。
That's why I and others believe that a true public option competing with private insurers is extremely important: otherwise, rising costs could all too easily undermine the whole effort.
与柴油机车相比，运行成本只有5%，电动车将很快成为一个看上去更可行的选择。
And with running costs as little as 5% those of diesel models, electric cars will soon start to look like a more viable option.
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