Definition: a change to something that makes it better Level: B1
他们去年做了一些家居改造。
They made some home ___improvements last year.
我对学校图书馆有一些改进建议。
I have some suggestions for ___improvements to the school library.
新的软件更新是一个重大的改进。
The new software update is a significant ___improvement.
