The diagram illustrates the 'complexity' of the cell's structure.
He doesn't grasp/understand the 'complexity' of the situation.
Her poetry is too 'complex' [='complicated'] for my taste.
(..) - You're telling me this is personal? - He's not doing it by himself. - Someone else is footing the bill. - Who? Heard of the military-industrial complex? Those are the manufacturers of the weapons. They think they own the system and they will do anything to keep that power. (..)2013 White House Down
(..) I'll show you the way. We got some important people waiting for us. - Are you okay, sir? - I'm all right. - Is your family in the complex? - They won't be here till tonight. - Your daughter, where's your daughter? - I couldn't find her. I hope she got out. Do you know these men? (..)2013 White House Down
(..) Well, congratulations, you're a parrot. It's a lot more than that, you cheeky bastard. Dont you see? They can't seem to follow our algebra, but, complex behaviours; that clicks. Well, that doesn't make any sense at all, does it? Problem is, not everyone shares our policy (..)2016 Arrival