关系自登记之日起成立。的翻译：Since the establishment of the date of registration. 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

The establishment of the relations since the date of registration.

Since the establishment of the date of registration.

Relations date of establishment from registration.

Since its establishment as of the date of registration.

Since the establishment of the date of registration.