(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 欠发达的乡村
(of a country 国家 not having modern industries, and with a low standard of living 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