Of course, this requires a solid understanding of the cost of a return, relative to the value of each product.

当然，这要求对一次退回成本的可靠的理解，会涉及到每个产品的价值。

youdao

You get a great deal of freedom in return for the cost of running your own site.

你做成了一笔不错的买卖，花钱运营自己的网站并以此换来自由。

youdao

Figure 3: Cost reduction, increased return.

图3：成本降低，利润增加。

youdao

So, the optimal thing to do if you live in a world like this n is to get n as large possible and you can reduce the standard deviation of the portfolio very much and there's no cost in terms of expected return.

如果现实中也这样简单的话,那么你就尽量增大,这样就能让投资组合的标准差,就会大大降低,从预期收益率的角度来看,这样做的成本是零。

耶鲁公开课 - 金融市场课程节选

So I'll be producing this stuff, this water at cost c and only getting p, which is not only less than c in return.

这就导致成本是c的瓶装水只能卖到p,这个价格都不能捞回本钱呢

耶鲁公开课 - 博弈论课程节选

Even new ideas that were originally designed to reduce cost and increase return have degenerated into high cost speculative products designed to increase the amount of money the industry takes in.

FORBES: Educating a Nation of Financial Illiterates

Scooterman's prices aim to beat the cost of a return taxi ride - one to get home after a night drinking and a second to pick up your car the following day.

BBC: NEWS | UK | Wales | Scooter idea to cut drink-driving

Instead of answering the question around how do we make a quality postsecondary education affordable, the government will keep going down the road of merely enabling students to afford a higher education regardless of the total cost or the return.

FORBES: New Higher Ed Regulations Leave Everyone Empty