(upgrading 的复数) v. 升级；提高品位（upgrade的现在分词）
plural of upgrading
v rate higher; raise in value or esteem
v to improve what was old or outdated
v give a promotion to or assign to a higher position
v get better travel conditions
v give better travel conditions to
- 原型: upgrading
英汉双解字典由 ECDICT 提供