他们的友谊是建立在多年相互开放沟通的基础上的的翻译：Their friendship is built on open communication with each other for many years on the basis of 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Their friendship is built on open communication with each other for many years on the basis of

Their friendship is the establishment opens the communication mutually in many years in the foundation

Their friendship is based on many years of mutual open communication on the basis of the

Their friendship is built on open communication with each other for many years on the basis of