not related to what is being discussed or considered and therefore not important

These documents are largely irrelevant to the present investigation. 这些文件与目前的调查大都不相干。

Making a large profit is irrelevant to us - the important thing is to make the book available to the largest possible audience. 赢得巨额利润对我们来说并不重要，重要的是要让尽可能多的读者读到这本书。