upgrading
n. 提升；浓缩
sp. 动词upgrade的现在分词.
近义词：promotion，advancement，stepup，advance，progression，progress，elevation，improvement，renovation，modernization，transformation，enhancement，conversion，development，reconstruction，
英英释义
动词upgrade
- rate higher; raise in value or esteem
- to improve what was old or outdated
- give a promotion to or assign to a higher position
- get better travel conditions
- give better travel conditions to
例句
用作名词(n.)
- set sth in gold