使降级，使降等在级别或地位上降低；使降级。

To reduce in grade, rank, or status; demote.

youdao

使该国王降级到一种纯粹礼仪性的职能难道不更好吗？

Might it not be better to relegate the king to a purely ceremonial function?

《柯林斯英汉双解大词典》

在这一节，我将带您体验模拟磁盘故障的整个过程，随后使您的RAID卷退出降级模式。

In this section, I'll walk you through the process of simulating a disk failure, and then bringing your RAID volume back out of degraded mode.

youdao