The Web client needs to execute under a certain security principle in order to retrieve the personal work list and complete the work item.

Web客户端需要在一定的安全原则下执行，为的是能取得个人工作列表及完成工作项。

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You might need to do this, for example, if you work in a test lab and need a test run to complete by a certain time of day.

举例来说，如果您在测试实验室中工作，并且需要在一天的特定时间内完成某个测试回合，就可能必须设定时间限制。

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