1. His theory was inapplicable to many underdeveloped economies. 他的理论不适用于许多不发达的经济体。
2. Underdeveloped countries should be assisted by allowing them access to modern technology. 应该通过允许不发达国家使用现代技术来帮助它们。
3. Low average population densities are characteristics of most underdeveloped countries. 平均人口密度低是大多数不发达国家的特点。
4. It could eventually overcome the disparities between the privileged and the underdeveloped. 它最终可以克服享有特权者和未发达者之间的差距。
5. China is making efforts to optimize the use of educational resources so that rural and underdeveloped areas can receive more support. 中国正在努力优化教育资源的使用，以使农村和欠发达地区能够得到更多的支持。
