“一加一大于二”【英】

multiplying effect

译文来源

http://news.xinhuanet.com/english/2017-05/14/c_136282982.htm

例句

1. 各方通过政策对接，实现了“一加一大于二”的效果。--《习近平在“一带一路”国际合作高峰论坛开幕式上的演讲》

1. Such policy connectivity will produce a multiplying effect on cooperation among the parties involved.--Quoted from President Xi's speech at opening of Belt and Road forum for International Cooperation