the/your mind boggles, the/your mind boggles (also something makes the/your mind boggle, something boggles the/your mind) informalBELIEVE if your mindboggles when you think of something, it is difficult for you to imagine or accept it 使人无法想象;使人难以接受
The sheer amount of data makes the mind boggle.
光是数据量就让人难以想象。
the/your mind boggles, at
My mind boggles at the amount of work still to do.