Realistically, a budget accounting item for contingency allowance should be established whenever a contingency amount was included in the final cost estimate.

在实际操作当中，无论详细的成本估算中是否包括了意外事件，项目预算都应列支一笔应急储备金。

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The first pass at the product-definition phase should allow you to establish a good rough estimate for an interface's cost, complexity, and design time.

产品定义阶段的第一个关口应该建立对接口价格、复杂性和设计时间的粗略估计。

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During the period of preliminary design and construction drawing design, the budget statement should be prepared respectively so as to optimize the cost estimate.

在初步设计、施工图设计阶段分别编制初步设计概算书和施工图设计预算书，进一步优化成本预算。

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