downgrade
v.使降低；使降职；贬低；低估
网络解释.下坡；降级；水平下弯度；解密
词形变化:
过去式：downgraded 过去式：downgraded 过去式：downgrading 过去式：downgrades
on the downgrade 1 . (北美)走下坡路
descent degrade cheapen
upgrade
双语例句
1. 1 . We don't want to do anything that would precipitate a downgrade .
我们不想做任何会导致评级下调的事情.
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