filling system

英 美
  • 充填开采法
  • filling n.充填物;装满;馅动词fill的现在分词.
  • system n.系统;体系;身体;制度
    1. The new clerk is really on the ball. He's already improved the filling system in the office.
      新来的办事员真能干,他已经改进了办公室文件归档的方法。