可按 排在
It can be arranged in
以上为机器翻译结果，长、整句建议使用 人工翻译 。
把那些耗时多的任务安排在后台并由辅助线程实现，从而系统可按优先级来调度它们。
We arrange those tasks need more time span as backstage tasks which to be performed by worker threads. So the system can schedule them by priority.
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