undeveloped

1. ADJ An undeveloped country or region does not have modern industries and usually has a low standard of living. (国家或地区)不发达的[usu ADJ n]

The big losers will be the undeveloped countries, especially in sub-Saharan Africa. 最大的损失者将为不发达国家，特别是撒哈拉以南的非洲国家。

2. ADJ Undeveloped land has not been built on or used for activities such as mining and farming. (土地)未开发的

Vast tracts of the country are wild and undeveloped. 这个国家有大片荒芜未开发的土地。