poser
noun [ C ] informal uk/ˈpəʊ.zər/ us/ˈpoʊ.zɚ/
难题
a problem or question that is difficult to solve or answer
Who was the last woman to win three Olympic gold medals? That's quite a poser. 最近一位获得3块奥运会金牌的女运动员是谁?这个问题可真难。
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