the thrill of the chase idiom
追逐的兴奋感
the excitement that you feel when you are trying to find something or achieve something difficult
He craved power over others, not so much for its own sake as for the thrill of the chase. 他渴望得到至高的权力，与其说是为权力本身，还不如说是为了一种追逐的兴奋感。