求翻译：他们代表的是新兴经济体和发展中国家的利益，是国际政治和经济变革的重要力量，也是国际政治民主化和多极世界的坚定支持者。是什么意思？

They represent the emerging economies and developing countries, international politics and an important force for economic change, but also the democratization of international politics and a staunch supporter of multi-polar world.

They represent the interests of developing countries and emerging economies, the international political and economic change, and is also an important force in international political democratization and multi-polar world firm supporters.

They represent are the emerging economy and the developing nation benefit, is important strength which the international politics and the economy transform, also is the international politics democratization and the multipolar world firm supporter.

They represent emerging economies and developing countries ' interests, is an important force of international political and economic change, is also a staunch supporter of the democratization of international politics and a multipolar world.

They on behalf of to be new developing for economy for and the interestses of developing country,it is politics and the strengths importants of economic makeovers international, it is the strong supporters of international democratization of politics and multipolar world too.