1. Many rural areas in the country remain underdeveloped, lacking basic infrastructure and services.
这个国家的许多农村地区仍然发展不足，缺乏基础设施和服务。

2. The underdeveloped film revealed blurry and incomplete images.
这张没完全冲洗的胶卷显示出模糊不清、不完整的影像。