两国之间的商业合作用英语怎么说？

两国之间的商业合作

...commercial co-operation between the two countries...

commercial

adj. 商业的，贸易的，营利的，靠广告收入的；n. （电台或电视播放的）广告；

例句
More than 750 commercial airliners were involved in fatal accidents last year. Added to that were the 1,550 smaller aircraft.
去年750多家商业航空公司遭遇过人员死亡的事故。另外还有1,550架小型飞机也出过同样的事故。

between

prep. 在…之间，私下，暗中，在…中任择其一，来往于…之间；adv. 当中，中间；

例句
How big is the abyss between what you think you are and what you actually are?
你对自己的认识和真实的你之间差别到底有多大？

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

two

n. 两个，两个东西，两点钟，一对；adj. 两个的，我

例句
He has been absent from his desk for two weeks...
他已经有两个星期没有坐在办公桌前了。

countries

n. 国家( country的名词复数 )，国土，郊外，地区；

例句
The two countries signed an agreement to jointly launch satellites.
两国曾签订了联合发射人造卫星的协议。