您需要评估所有项目的风险，来决定项目是否在可接受的风险范围之内。

You need to assess all project risks to determine if the projects are within acceptable levels of risk.

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如果评估显示风险太高，则需要重构项目，以便风险能减少到可接受的级别。

If your assessment shows risks are high, you will need to restructure your project, so risks can be mitigated to more acceptable levels.

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当然，对于拥有可接受的风险的项目来说，必须对每个任务都这样做，这将导致几乎将持续时间加倍。

Of course, for the project to have acceptable risk, this must be done for each of the tasks, leading to almost doubling the duration.

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