relationship with:和……的关系
How is your relationship with her developing?
你与她的关系发展得怎样了?
Relationship to the marine environment
与海洋环境的关系
基本上来说,relationship with 一般后面跟人,to 跟物
relation to关于；涉及；与……有关
1.his relation to his wife and children has no longer anything in common with the bourgeois family-relations;
他们和妻子儿女的关系同资产阶级的家庭关系再没有任何共同之处了；
It is my relation with my relation that I sometimes find embarrassing.
时常令我为难的,是我的亲戚和我的关系.
relation可加to也可加with
具体用哪个还是要看整句话的.