别总摆出一副什么都知道的样子，没人喜欢跟自以为是的家伙一起工作。

Stop acting like a ___smarty all the time—no one likes working with know-it-alls.

那个自以为是的家伙总爱在会议上炫耀自己是个聪明人。

That self-important ___smarty always shows off at meetings.