Something simple and practical had, over time, become very complex and unpractical.

曾经非常简单和实用的内容经过一段时间后变得非常复杂和不切实际。

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In the environment full of uncertainty, it is unpractical to make long-term and invariable decision, and it is very important to evaluate and use the uncertainty.

在这充满不确定的环境中，制定长期的、一成不变的决策显然是不现实的，而评价和利用这种不确定性的能力就变得非常关键。

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In the environment full of uncertainty, it is unpractical to make long-term and invariable decision, and it is very important to evaluate and use the uncertainty.

在这充满不确定的环境中，制定长期的、一成不变的决策显然是不现实的，而评价和利用这种不确定性的能力就变得非常关键。

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