如果你不等待一个任务，传播异常，或访问例外属性，例外的是升级根据。
If you do not wait on a task that propagates an exception, or access its exception property, the exception is escalated according to the.
您可以将长时间运行的流程视为工作流流程；它可能会等待外部事件发生，或呼叫一个或多个人员执行任务。
You can think of a long-running process as a workflow process; it may wait for an external event to happen, or call upon one or more people to perform a task.
现在已经大大减少，每个等待操作只需要一个基元，与操作中的任务数量无关。
This has been reduced to one per wait operation, regardless of the number of tasks involved.
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