► 名詞難問 [なんもん]
meaning: problem rank: 3☆
人種問題は
簡単には
解決出来ない難問だ ⇨ The race issue is a difficult issue that cannot be solved easily
(☛ Literally “difficult question”)More examples:- 世界中の科学者達を悩ます難問 ⇨ A difficult question that makes scientists all over the world struggle to answer