a developed country

• China is a developing country while america is a developed one
  中国是个发展中国家.美国是个发达的国家
• China is a developing country while japan a developed one
  中国是一个发展中国家，而日本是一个发达国家。
• Britain is a developed country while china is a developing country
  英国是个发达国家而中国是发展中国家。
• China is a developing country and living standard is still low
  中国是个发展中国家，生活水平还依然很低。
• China is a developing country
  中国是个发展中的国家。
• China is a developing country
  中国是一个发展中国家。
• China is a developing country with the biggest population in the world
  中国是世界上人口最多的发展中国家。
• American is a developed country
  美国是个发达的国家
• The usa is a developed country
  美国是个发达的国家
• America is a developed country
  中国是个发展中国家