2. Question the need for an upgrade. 对“升级”的需要提出质疑。
3. No need to upgrade. 系统不需要升级。
英英解释
n.
1. an upward slope or grade (as in a road)
2. software that provides better performance than an earlier version did
3. a reservation that is improved
4. the property possessed by a slope or surface that rises
5. hardware that provides better performance than an earlier version did
6. the act of improving something (especially machinery) by raising it to a higher grade (as by adding v.
1. rate higher; raise in value or esteem
2. to improve what was old or outdated
3. give a promotion to or assign to a higher position
4. get better travel conditions
5. give better travel conditions to
