upgrading/ʌpˈɡreɪd/动词使(机器、计算机程序等)升级;提升,提拔(某人)It's very simple to upgrade the indexing software.升级索引软件很简单。/ˈʌp.ɡreɪd/名词(能提高电脑等效能的)软件(或设备)a hardware upgrade硬件的升级想跟读,去练习