underdeveloped regions的用法和樣例：
例句
- Developed regions should assist and stimulate the development of underdeveloped regions in various ways.
發達地區要採取多種方式幫助和帶動欠發達地區。 - And a substantial component of that burden is because of the high levels of child maotalage mortality in Afric Africa compared with to other regions.
非洲的問題尤其突出，各種疾病的肆虐，使得非洲大陸的早產兒死亡率高達其他欠發達地區的兩倍。
