The traditional investment decision methods, represented by Net Present Value method, compare the present values of expected income and cost stream to decide.

传统投资决策方法以净现值法为代表，通过比较预期收入流和费用流的现值来进行决策。

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The computer age triggered a seemingly endless stream of scientific data, but such incoming mountains of information come at a cost.

计算机时代催生了海量的科学数据，但如此让人仰止的信息大山也是要付出代价的。

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opposition candidates argue that the steady stream of low-cost workers coming to Singapore depresses wages for Singaporeans, thus adding to their worries about rising prices.

反对派候选人指出，稳定涌入新加坡的低成本劳工流使得新加坡人的工资被压低，并由此加重了他们对物价攀升的忧虑。

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Barrick has four new low-cost mines coming on stream over the next four years, and Nystrom says Barrick's execution risk is low because of ownership of several mines, and that political risk is also mitigated because of geographic diversification.

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Yet they face tough competition and must rely on cost cutting and a steady stream of new models to maintain profit margins that are already low.

ECONOMIST: Manufacturing in Japan

SEATTLE--(BUSINESS WIRE)--Amazon.com (NASDAQ:AMZN) today announced an expansion of a licensing agreement with PBS Distribution that will allow Amazon Prime members to instantly stream, at no additional cost, current and archived PBS programming.

ENGADGET: Amazon Prime Instant Video expands its library with even more video from PBS