| 单词 | upgrade |
|---|---|
| 音标 | ['ʌpgreid] |
| 解释 | v.提昇，给…升级 |
| 红宝书 | 【英】 v. 提昇，给...升级( give a position of more importance to) 【记】 up（向上）+grade（ 等级）→升级 |
| 字源 | upgrade (n.) also up-grade, 1847, "upward slope," from up (adj.) + grade (n.). The meaning "upgraded version" is recorded from 1980. upgrade (v.) "increase to a higher grade or rank," 1904 (transitive); 1950 (intransitive), from up (adv.) + grade (v.). Related: Upgraded; upgrading. |
| 不择手段背单词 | 无 |
| 趣味全助记 | 无 |
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