developed areas

• 发达地区

developed areas的用法和样例：

例句

1. Irrigation projects in undeveloped areas can change local economies.
   灌溉项目在发达地区可以改变当地经济。
2. Aid provided by the state and developed areas to national autonomous areas has promoted their economic development.
   国家和经济发达地区对民族自治地区的支援，促进了民族自治地区的经济发展。