ADJ [usually ADJ n](国家或地区)不发达的,欠发达的,经济落后的 An underdeveloped country or region does not have modern industries and usually has a low standard of living. Some people dislike this term and prefer to use developing. (国家或地区)不发达的,欠发达的,经济落后的
Underdeveloped countries should be assisted by allowing them access to modern technology.
应该通过提供现代技术来帮助不发达国家。
...public-health problems in the underdeveloped world.