upgrade /ʌpˈɡreid/ I. vt. 提升，使升级：upgrading training 升级/晋级训练 ‖II. n. ［u］ (可带不定冠词)上升，增加；上坡：Thefts have been on the upgrade. 盗窃案在增多。The car can go on an upgrade. 这辆汽车能爬坡。