upgrading
词形变化：
动词过去式: upgraded | 动词过去分词: upgraded | 动词现在分词: upgrading | 动词第三人称单数: upgrades |
同义词：
promote | advance | raise | elevate | promotion | advancement | elevation | exaltation | improvement | upgrading | renovation | modernization | enhancement | improve | update | renew | modernize | ascent | aggrandize | rise | kick upstairs | acclivity | climb | rising slope |
反义词：