大聪明 用英语怎么说呢

"大聪明" (dà cōng míng) is a Chinese phrase that means "extremely intelligent" or "genius." In English, you could use the word "genius" to express the same idea.
The word "genius" comes from the Latin word "genius," which referred to a guardian spirit or tutelary deity believed to be the source of a person's natural abilities and talents. In English, the word "genius" is used to describe someone who is extremely intelligent or talented, especially in a particular field or area of expertise.
Here are some examples of how you could use the word "genius" in English:
She is a genius when it comes to math.
He is a musical genius.
She has a photographic memory, she is a genius at memorizing things.
In Chinese:
她在数学方面是个天才。
他是个音乐天才。
她有着相片般的记忆力，在记忆方面是个天才。