upgrade /ˈʌpˌgreɪd, -ˈgreɪd/ CET6 TEM4 ( upgrading, upgraded, upgrades )

• 1. 

  V-T If equipment or services are upgraded, they are improved or made more efficient. 使升级 [usu passive]

  例：

  Helicopters have been upgraded and modernized.

  直升机已经升级并且装上现代化设备。

  例：

  Medical facilities are being reorganized and upgraded.

  医疗设施正在进行重组和升级。

• 2. 

  N-COUNT Upgrade is also a noun. 升级

  例：

  ...equipment which needs expensive upgrades.

  …需要进行昂贵升级的设备。

• 3. 

  V-T If someone is upgraded, their job or status is changed so that they become more important or receive more money. 提升 [usu passive]

  例：

  He was upgraded to security guard.

  他被提升为保安。

• 4. 

  V-T/V-I If you upgrade or are upgraded, you change something such as your plane ticket or your hotel room to one that is more expensive. 使升舱; 使 (旅馆房间等) 升级; 升舱; 升级

  例：

  His family was upgraded from economy to business class.

  他的家人从经济舱升到了商务舱。