downgrade
名词复数：downgrades
过去式：downgraded
过去分词：downgraded
现在进行时：downgrading
词形变化：
动词过去式: downgraded | 动词过去分词: downgraded | 动词现在分词: downgrading | 动词第三人称单数: downgrades |
同义词：
lower | cheapen | descent | degrade | alloy | demote | reduce | relegate |
反义词：
upgrade |
词义辨析：
同义参见:
lower1
degrade
descent
alloy2
cheapen
反义参见:
upgrade