upgrade

柯林斯词典

1. V-T If equipment or services are upgraded, they are improved or made more efficient. 使升级[usu passive]
Helicopters have been upgraded and modernized. 直升机已经升级并且装上现代化设备。
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
...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]
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
His family was upgraded from economy to business class. 他的家人从经济舱升到了商务舱。

There were no seats left in economy so we were upgraded to business class .
We've decided to upgrade our old computer .
The system is currently being upgraded.
You'll need to upgrade the memory if you want to run this program .
This is the price for the more basic package but you can always upgrade to the other one if you change your mind .