puzzler 

  1. 名詞
難題
使人困惑的人
使人困惑之物
/此名詞複數為"puzzlers"/

    同義字詞
conundrum,enigma,head-scratcher,mystery,mystification,puzzlement,riddle,secret

例句

  1. So, Jim, what is this puzzler ?
  2. A bit of a puzzler , for humans.
  3. We'll also have another puzzler .
  4. And...The answer to the puzzler .
  5. That is a reall puzzler of a trade.