Improvei提高improvevt.改善；改进；提高vi.变得更好；改进improved filling填料改良improved V model改进v模型improve accuracy精确度Improve Benefits成本控制improve treatment改善待遇, 改进疗法improved cylinder四分之三缩口improve farm tool改进农具improved strength改良强度Improved chitosan改良壳聚糖improve in health健康状况有所改善