なんだい
Noun
1.
difficult problem, challenge
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その難題を解決するために、私たちは協力しなければならない。
In order to solve that difficult problem, we must cooperate.
人間関係の難題は、しばしばストレスの原因となる。
Difficult problems in human relationships often become a cause of stress.
科学者たちは、地球温暖化という難題に取り組んでいる。
Scientists are tackling the difficult problem of global warming.
彼はその難題に果敢に挑み、見事に解決してみせた。
He bravely tackled that difficult problem and skillfully solved it.
Kanji that make up this word
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