upgrade

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

Helicopters have been upgraded and modernized. 直升機已經(jīng)升級并且裝上現(xiàn)代化設備。

Medical facilities are being reorganized and upgraded. 醫(yī)療設施正在進行重組和升級。

2. N-COUNT Upgrade is also a noun. 升級

...equipment which needs expensive upgrades. …需要進行昂貴升級的設備。

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. 他被提升為保安。

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. 使升艙; 使 (旅館房間等) 升級; 升艙; 升級

His family was upgraded from economy to business class. 他的家人從經(jīng)濟艙升到了商務艙。