Modern enterprises should renew some traditional cost concepts in time for adapting the changes of economic environment.

企业要适应经济环境的变化，必须及时更新传统的成本观念。

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The conventional concept of cost isn table to explain some kinds of cost behaviour in modern enterprise, so it cant contain all the kinds of cost concepts.

传统的成本概念已无法解释现代企业发生的种种成本行为，也无法涵盖各种具体形式的成本概念，因此，有必要加以改进。

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The reason that adding new APIs also has cost, for example developers have more concepts to choose from.

添加新api的理由还包括代价，例如，开发者会拥有更多可供选择的概念。

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The real capacity-cost solution lies in using more sophisticated traffic management and pricing concepts than the data cap.

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In December, Apple (NASDAQ: AAPL) enthusiasts could not stop talking about the so-called iPhone 5S. This month their attention has turned to concepts for the illusive iPhone Mini, as well as the low-cost iPhone.

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Projects like power generation, on the other hand, may cost hundreds of millions of dollars, since Google.org will endeavor to prove engineering concepts by building out power plants.

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