可以在任何时刻、任何线程内取消任务。

You can cancel the task at any time, from any thread

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安全地取消任务而不引发线程取消异常依旧是一个重要的方面。

The ability to cancel tasks, without Thread-Aborts, continues to be an important issue.

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然后可以用管理接口查询每个任务的当前状态、运行了多长时间，或者请求取消任务。

You could then use the management interface to query each task for what it is doing and how long it is taking or request that the task be canceled.

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