1N-VAR 改进(之处);改善(之处) If there is an improvement in something, it becomes better. If you make improvements to something, you make it better. 改进(之处);改善(之处)
...the dramatic improvements in organ transplantation in recent years. [+ in]
近几年器官移植方面取得的巨大进步
There is considerable room for improvement in state facilities for treating the mentally handicapped.
国家现有的用于智障病人治疗的设施还有相当大的改进余地。
2N-COUNT [usually singular]更优秀之物;改善的事物 If you say that something is an improvement on a previous thing or situation, you mean that it is better than that thing. 更优秀之物;改善的事物
The new Prime Minister is an improvement on his predecessor. [+ on]
新上任的总理比他的前任要强。
The system we introduced in 1980 has been a great improvement.