/ˌʌpˈgreɪd ||; ˌʌpˈgred/verb [T] to change sth so that it is of a higher standard 提高标准或品级: Upgrading your computer software can be expensive. 计算机软件升级可能很昂贵。 upgrade /ˈʌpgreɪd ||; ˈʌpˌgred/ noun [C]