形容词未充分发育或发展的; （国家等）经济不发达的; 足的
动词（使）发展不完全，（使）显影不足( underdevelop的过去式和过去分词)
1. 不发达的：underdevelopment 不发达 | underdeveloped 不发达的 | developing 发展中的
2. 未充分发育的：underdeveloped reservoir 未充分开发的油藏 | underdeveloped 未充分发育的 | underdevelopment 显象不足;发展不充分
3. 开发不充分的：underdevelop /显影不足/ | underdeveloped /开发不充分的/ | underdevelopment /未开发/
4. 不兴隆的：underdevelopment不兴隆 | underdeveloped不兴隆的 | developing展开中的
1. （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.
e.g. 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。
e.g. ...public-health problems in the underdeveloped world.
不发达国家的公共卫生问题
adj
1. relating to societies in which capital needed to industrialize is in short supply
Synonym: developing
2. not yet fully developed