[] the act of making sth better; the process of sth becoming better 改善；改进◆The economy is showing signs of improvement. 经济显示出有所改善的迹象。◆Although we have made progress with quality standards, there is still room for improvement. 尽管我们的品质标准取得了进展，但是尚有改进的余地。◆Retailers saw some improvement in sales this year. 零售商今年的销售量有所提高。⨁to expect / report / see improvement (in sth) 期望／汇报／看出（在某方面的）改善⨁sth shows improvement 某事显示有所改善
[] improvement (from/on/over sth)a change in sth that makes it better; sth that is better than it was before 改进处；改善的事物◆These figures are a big improvement from a year ago. 这些数字比一年前有了很大的改进。◆We have made improvements to the design of many of our products. 我们已改进了我们许多产品的设计。◆benefits from cost-cutting and productivity improvements 得益於削减成本和提高生产率⨁to achieve / expect / make / report / see an improvement 达到／期望／作出／汇报／看出改善⨁sth shows an improvement 某事显示改进之处⨁a big / dramatic / major / significant improvement 大的／巨大的／显着的／明显的改进⨁a modest / slight / steady improvement 适度的／轻微的／稳定的改进