improvement
n
1 [C, U] ~ (on/in sth) action or process of improving; state of being improved 改进; 改善; 改良
cause a distinct/significant/marked improvementin working conditions 使工作环境有明显的[重大的/显著的]改善
a slight, gradual, etc improvement in the weather 天气的轻微的、 逐渐的...好转
This year's car is an improvement on (ie is better than) last year's model. 今年的汽车是去年型号的改进型.
There is room for further improvement in your English. 你的英语尚有进一步提高的余地.
2 [C] addition or alteration that improves sth or adds to its value （改进某事物或提高其价值的）增加或修改
home improvements 住宅的装修
[attrib 作定语]
a road improvement scheme 道路改善计画.