所有可能的方法都试过了，但都是徒劳的的翻译：Tried all possible methods, however, were in vain 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

All possible methods are tried, but all in vain

Tried all possible methods, however, were in vain

All possible methods all to have tried, but all is the futile effort

All of the methods may be tried, but have been in vain

Tried all possible methods, however, were in vain