推动力

driving(or motive,pushing,propelling)force;engine;stimulant
中国是亚太和世界经济增长的重要～。China is a major driving force fuelling the economic growth in the Asia Pacific region and the world at large./亚洲已成为全球经济最具活力和潜力的地区之一，是世界经济发展的重要～。Asia has become one of the most dynamic regions with the greatest development potential in the world and an engine-driving world economic growth.