可持续发展面临日益加剧的资源和环境压力。经济体制不完善制约经济增长质量的提高。发展不平衡带来的社会矛盾更加复杂。国际经济环境的不确定因素增加。 Sustainable development is facing increasing pressure on resources and the environment. Imperfect economic system restricts the quality of economic growth. The social contradictions brought by unbalanced development are more complicated. The uncertainties in the international economic environment have increased.