一旦您进行升级，系统不能被降级了。
Once you proceed with the upgrade, the system can not be downgraded again.
一些建议进行了升级或专家意见的基础降级。
Some recommendations were upgraded or downgraded on the basis of expert opinion.
这表明可以拖动任务名称来升级或降级任务。
This indicates that you can drag the task name to indent or outdent the task.
这表明可以拖动任务名称来升级或降级任务。
This indicates that you can drag the task name to indent or outdent the task.
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