upgradeessential

upgrade汉语翻译：n. 上坡, 升级, 上升ad. 往上vt. 使升级, 提升, 改良品种vi. 升级【计】升级【医】提升等级, 提高标准相关词组: on the upgrade词型变化：动词过去式:upgraded过去分词:upgraded现在分词:upgrading第三人称单数:upgrades英语解释：名词 upgrade:an upward slope or grade (as...