(of land )土地 not used for farming, industry, building, etc. 未开垦的;未利用的;未开发的 undeveloped countryside 未开发的农村
(of a country )国家 not having modern industries, and with a low standard of living ‘A developing country’ is now the usual expression.不发达的;落后的 not grown to full size 发育不良的;未充分发育的 undeveloped limbs 发育不全的四肢
compare underdeveloped