“压舱石”【英】

cornerstone

译文来源

http://english.gov.cn/premier/speeches/2016/07/16/content_281475394584697.htm

例句

1. 经贸合作是国与国关系发展的“推进器”和“压舱石”。——《亚欧伙伴命运与共　合作升级再谱新篇——李克强在第十一届亚欧首脑会议上的发言》

1. Business cooperation is the propeller and cornerstone for developing state-to-state relations.—Quoted from Upgrade Cooperation and Foster a Partnership of Shared Future Between Asia and Europe– Remarks at the 11th ASEM Summit