to make a machine or system better and more powerful
You can upgrade your phone to get new features.
你可以升級你的手機以獲得新功能。
to improve a building or area to make it better
The city will upgrade the park with new benches and lights.
城市將用新長椅和燈光升級公園。
to get a better seat or room than what you paid for
They gave us a free upgrade to a better hotel room.
他們免費為我們升級到更好的酒店房間。
to give someone a more important job
The company decided to upgrade her to manager.
公司決定將她升級為經理。
a new, better version of a machine or system
The software upgrade makes the computer faster.
軟體升級使電腦運行更快。
improvements made to a building or area
The school needs an upgrade to fix the old classrooms.
學校需要升級以修復舊教室。
a better seat or room than what you paid for
We got a free upgrade to first class on our flight.
我們的航班免費升級到了頭等艙。