The logical workers take the job from the queue, and process it and send back the result by using some of the functions provided by the class.

逻辑工作线程从队列中渠道任务，进行处理，并通过使用一些类提供的函数将结果返回。

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The process of submitting many FTP jobs to a queue does save time because you do not have to wait for the previous job to complete before committing to the next job.

把许多 FTP 作业提交给队列可以节省时间，因为不需要等待前一个作业完成之后再提交下一个作业。

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