common ground

详细解释:共同基础
【法】 共同点

英语解释：

名词 common ground:

a basis agreed to by all parties for reaching a mutual understanding

例句：

My father and my new boyfriend have cricket and beer drinking as common ground, so they should get on well with each other.我的父亲和我的新男朋友有打板球和喝啤酒的共同兴趣，因此他们应该可以彼此相处很好。