A smart aleck thinks they are very clever and they're very annoying.

smart aleck 这种自作聪明的人，认为他们很聪明，他们很烦人。

Stop being a smart aleck and answer the question.

塔玛拉：别再自作聪明了，回答问题吧。

So a smart aleck is someone who thinks they are highly intelligent and they try to demonstrate this to others all of the time.

自作聪明的人是那些认为自己非常聪明的人，他们总是试图向别人证明这一点。

Tamara says, " Stop being a smart aleck and answer the question" .

塔玛拉说，“别再自作聪明了，回答问题吧”。

I have been described as a smart aleck, for example.

例如，我被描述为一个自作聪明的人。

A " smart aleck" is somebody who thinks he or she knows everything.

“聪明人”是自以为无所不知的人。