establish and improve

• 建立和完善

establish and improve的用法和样例：

例句

1. It is necessary to establish law and regulation concerning credit information.
   应尽快建立和完善相关的法律法规，为信用信息共享和合理使用提供制度保障。
2. Various facilities for grassroots sports shall be established and improved on an ongoing basis.
   不断建立和完善各类群众健身体育场地。