downgrade
v.
1930, from down, adv. + grade, v.. Related: Downgraded; downgrading. As a noun, "a downward slope," from 1858.
〔蒋〕[down下，grad步，级] 降低，贬低，降级，下坡
〔蒋〕[down下，grad步，级] 降低，贬低，降级，下坡
| 词汇 | downgrade |
| 词根词缀 | Online Etymology Dictionary 词根李平武蒋争 downgrade v. 1930, from down, adv. + grade, v.. Related: Downgraded; downgrading. As a noun, "a downward slope," from 1858. 〔蒋〕[down下，grad步，级] 降低，贬低，降级，下坡 |
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