(about a country, society, etc.) having few industries and a low standard of living（国家、社会等）不发达的◆underdeveloped countries不发达国家ⓘ ‘Developing countries’ is now the usual term used.现在通常用 developing countries 一词。not developed to a very high level or standard开发不充分的◆Telecommunications systems in the region remain underdeveloped.这个地区的电讯系统发展仍然不充分。➡developed , developing , undeveloped ▸ˌunderdeˈvelopment
noun
[] ◆the underdevelopment of internal transport systems不发达的国内运输体系