If a person, a book, or a talk is erudite, it shows a lot of knowledge that comes from careful, long study — not from being quick or street-smart. You have read widely, often in history, literature, languages, or ideas, and it shows.

If a person, a book, or a talk is erudite如果一個人、一本書，或一場演講是erudite的 it shows a lot of knowledge就表示展現了很多知識 that comes from careful, long study這些知識來自仔細、長期的鑽研 not from being quick or street-smart而不是來自反應快或社會歷練。 You have read widely你讀得很廣 often in history, literature, languages, or ideas常常是歷史、文學、語言，或思想方面 and it shows而且看得出來。

It is a fairly formal, even slightly cool word: a compliment about book-learning. Teachers, critics, and people who like to sound precise use it; you would not usually call a clever child or a good mechanic erudite.

It這個詞 is a fairly formal, even slightly cool word算是相當正式，甚至有點冷調的詞 a compliment about book-learning是在稱讚一個人書讀得多、學問好。 Teachers, critics, and people who like to sound precise use it老師、評論家，還有喜歡講話精確的人會用這個詞 you would not usually call a clever child or a good mechanic erudite但你通常不會說一個聰明的小孩或一個技術好的黑手是erudite。

Though actually, people also use it with a small smile, as if the person is a bit too bookish, or they use it loosely just to mean “sounds smart.” The heart of the word is still learned, not merely bright.

Though actually不過其實 people also use it with a small smile有人也會帶著一點笑意用這個詞 as if the person is a bit too bookish好像在說這個人有點太書呆子 or they use it loosely just to mean "sounds smart."或者鬆散地用它來表示「聽起來很聰明」 The heart of the word is still learned, not merely bright但這個詞的核心還是「有學問」，而不只是「腦筋好」。

It is mostly an adjective (an erudite historian); as a noun, an erudite (a very learned person) exists but is rare.

It主要 is mostly an adjective是形容詞（an erudite historian一位博學的歷史學家） as a noun當名詞用時 an erudite (a very learned person)an erudite（指一個很有學問的人） exists but is rare也有這種用法，但很少見。