请问“礼尚往来”用英语怎么翻译,谢谢!

礼尚往来:
courtesy demands reciprocity
Friendships cannot stand always on one side.
礼尚往来.
We gave the Smiths a bottle of gin last Christmas,so this year they gave us a bottle of Scotch to even things up a bit.
去年圣诞节我们送给史密斯家一瓶杜松子酒,今年他们便给我们送了一瓶苏格兰威士忌酒,以使礼尚往来.

Friendship can't stand always on one side.

courtesy demands reciprocity

礼尚往来
①Courtesy demands reciprocity
②Etiquette requires reciprocity