The song is about fearlessly loving someone no matter the cost.

VOA: special.2010.06.25

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

The irony is--these things cost like a dollar each now because no one needs them anymore.

具有讽刺意味的是，这些盘现在每个,只值1美元了因为。

哈佛公开课 - 计算机科学课程节选

He says it is true that such crops can have higher output with less cost,but added: No one knows the consequences that will have on soil fertility and the human body.

VOA: special.2010.05.18

"The scheme to radically change the sources and the cost of American energy, through a system known as 'cap and trade' may be well intentioned, but it will cost us dearly in jobs and income, and it stands no chance of achieving its objective of a cooler earth,".

VOA: standard.2009.05.30