under-developed rural areas的用法和樣例：
例句
- It is right to establish economic cooperation between developed and less developed areas.
在發(fā)達地區和相對欠發(fā)達地區搞經(jīng)濟協(xié)作區，這是對的。 - Therefore, we should research into the building of schoolmasters for the underdeveloped areas.
因此，必須加強經(jīng)濟欠發(fā)達地區普通中學(xué)校長(cháng)隊伍建設研究。
