bright spark
US /braɪt spɑːrk/
UK /braɪt spɑːrk/

1.
聪明人, 才子
a clever and intelligent person (often used ironically to mean the opposite)
:
•
Our new intern is a real bright spark; he solved the problem in minutes.
我们的新实习生真是个聪明人;他几分钟内就解决了问题。
•
Oh, you forgot your wallet again? What a bright spark you are!
哦,你又忘了钱包?你真是个“聪明人”!