Fādáguójiā yīnggāi chéngdān gèngduō de jiǎnpái zérèn.
Developed countries should bear more responsibility for emissions reduction.
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Contrasts with 发展中国家 (developing country). In Chinese foreign-policy discourse, the developed/developing binary is politically weighted; China officially self-identifies as a 发展中国家 despite being the world's second-largest economy.