Sentence examples for a very complicated opponent from inspiring English sources

"We did our job against a very complicated opponent.

It's a very complicated situation".

"The tube is a very complicated system.

"He's a very complicated person".

This is a very complicated case".

This is a very complicated challenge".

"It is a very complicated situation".

They are a very complicated country".

"It's a very complicated puzzle.

Lewis is a very complicated young man.

"This is a very complicated equation".