他们尽力去救他，但是没有成功的翻译：They tried to save him, but was not successful 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

They try to save him, but did not succeed

They tried to save him, but was not successful

They rescue him with every effort, but has not succeeded

They do their best to save him, but to no avail

They tried to save him, but was not successful