improvement

柯林斯詞典

1. N-VAR If there is an improvement in something, it becomes better. If you make improvements to something, you make it better. 改進(jìn)
...the dramatic improvements in organ transplantation in recent years. …近幾年器官移植上令人矚目的改進(jìn)。
2. N-COUNT If you say that something is an improvement on a previous thing or situation, you mean that it is better than that thing. 改進(jìn)的事物; 勝過他人的人
The new governor is an improvement on his predecessor. 新任縂督勝過他的前任。

There's been a definite improvement in your English since you arrived .
Billy's work at school has shown signs of improvement this year .
Local parents successfully campaigned for safety improvements at the playground .
The report suggests that there has only been a marginal improvement in women's pay over the past few years .
The improvement in sales figures had a beneficial effect on the company as a whole .