If you describe someone as erudite, you mean that they have or show great academic knowledge. You can also use erudite to describe something such as a book or a style of writing.
例句
He was never dull, always erudite and well informed.他從來就不愚笨，而是一直博學多才、見多識廣。...an original and highly erudite style.有獨創性且非常博學的風格