这两家公司合作开发新产品。

The two companies were ___collaborated to develop new products.

这对夫妇已经在一起十年了，感情依然很好。

They have been ___coupled for ten years and their relationship is still strong.

良好的饮食加上规律运动是保持健康的关键。

A healthy diet ___coupled with regular exercise is key to staying fit.