up till now ,ther has been no evidence that beings from outer space have ever been to our earth这句话怎么翻译

问题描述:

up till now ,ther has been no evidence that beings from outer space have ever been to our earth
这句话怎么翻译

直到现在也没有任何依据证明有外太空的生物曾经来到过我们的地球~