當你為頭發缺少光澤而苦惱時，非洲貧困國家的人卻在忍饑挨餓，為明天的糧食發愁，相比之下，你的煩惱是那么無足輕重，這種瑣碎的小問題就叫first-world problem（第一世界問題）。

First-world problem refers to a trivial frustration or petty concern, particularly one that contrasts sharply with serious problems such as those faced by developing nations.

“第一世界問題”指的是微不足道的挫折或瑣碎的煩心事，和發展中國家所面臨的嚴重問題形成鮮明對比。

Example:

Mindy feels so worried about her party dress that she has no appetite to eat, while her husband brushes it aside as a first-world problem.

明迪很為派對上穿什么衣服而苦惱，連飯都吃不下去了，而她的丈夫卻不以為意，認為這是個無足輕重的“第一世界問題”。

（中國日報網英語點津 陳丹妮）