downgrade v. 降级;降职
downgrade sb/sth (from sth) (to sth) 把某人/物从……降级到……
She's been downgraded from principal to vice-principal.
她从校长降到了副校长。
Giant pandas are no longer classified as endangered but are still vulnerable.
大熊猫从“濒危级”降到“易危级”了。
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