持久的合作伙伴【英】

long-term partner

译文来源

http://www.hjenglish.com/becgaoji/p485860/

例句

1. 可以说，在中国现代化进程中，德国是持久的合作伙伴。双方合作也为德国经济增长增添了活力。——《李克强：百尺竿头更进一步》

1. Germany is China's long-term partner in its pursuit of modernization. Cooperation with China has also stimulated Germany's growth. —Quoted from Open Up New Horizon for China-Germany Relations