in less deveroped areas 为什么要用developed?developing?

in less deveroped areas 为什么要用developed?developing? less developed与developing的区别 some parents in less developed areas prefer boys to girls,do some parents in less developed areas prefer boys to girls 为什 some parents in less developed areas prefer boy to girls,don some parent in less developed areas perfer boy to girls don' 翻译：all less developed areas with relatively low income 英语翻译”欠发到国家”是“a less developing country”还是 “a less developed 用所给词的适当形式填空 Some parents in ()developed areas prefer boys to 英语翻译In urban areas of developed countries,perhaps particular development developing developed develop developed 和 developing 区别?