that it is evident in the mind's eye, without proof being demanded for it

listen to the pronunciation of that it is evident in the mind's eye, without proof being demanded for it
الإنجليزية - الإنجليزية
obvious by inspection

It is obvious by inspection that the set \{[0,1), [1, 2), [2, 3),...\} is a partition of [0, \infty).