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.