到目前为止还未找到有效的治疗癌症的方法的翻译：Up to now has not been found effective in the treatment of cancer 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

So far have not found an effective method of treating cancer

Up to now has not been found effective in the treatment of cancer

So far had not found effectively treats cancer the method

So far there has not been able to find effective methods for the treatment of cancer

Up to now has not been found effective in the treatment of cancer