英语：developing与developed的区别?

less developed与developing的区别 developed 和 developing 区别? developmental,developing,developed 三者的区别于用法 developing与developed有什么区别?还有boiling和boiled?老师说是一个类型的,那是什么类型呢 developing与Development的区别 development developing developed develop developing country and developed country developed是发达的意思?还是developing是发达的意思?还有那个是发展中 China is a developing/develop/developed/being developed coun developed countries should help developing countries....why 英语翻译220.expect to do 221.developing countries 222.developed in less deveroped areas 为什么要用developed?developing?