Perceive the true nature of what must be transparent? (3,7)
I believe the answer is:
see through
I believe this is a double definition.
'perceive the true nature of' is the first definition.
(I've seen this before)
'transparent?' is the second definition.
(I've seen this before)
'what must be' is the link.
(Other definitions for see through that I've seen before include "Rumble" , "Get to the bottom of" , "Transparent" , "not be taken in" , "Stay to the end" .)