improvement的意思是改善、改进、改进处、改善设施。它主要指对事物进行修改或改进以使其变得更好。
1. improvement in (某方面)
2. make improvements (in) (某方面)
3. improve (某方面)
4. enhance (某方面)
5. progress (in)
6. move forward (in)
7. get better
8. get on well
9. get rid of the flaws
10. bring about a change