little-developed russian

• малоосво́енный

  little-developed, undeveloped (of land), largely untouched

  not yet fully mastered, insufficiently tried out

Examples

• У кота появилось маленькое брюшко от переедания.

  The cat developed a little belly from overeating.

• Мы поехали в малоосвоенные районы Сибири.

  We went to the little-developed regions of Siberia.