upgradevt.
英 ʌp'greɪd | 美 ,ʌp'ɡred
中文vt. 使升级；提升；改良品种\nn. 升级；上升；上坡\nadv. 往上\nadj. 向上的
使升级；提升；改良品种
n. 升级；上升；上坡
adv. 往上
adj. 向上的
词根词源
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.
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