be neither fish nor fowl
US /bi niːðər fɪʃ nɔr faʊl/
UK /bi niːðər fɪʃ nɔr faʊl/
1.
どちらとも言えない, 分類しにくい
to be difficult to categorize or identify; to not belong to any particular group or type
:
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His new business venture seems to be neither fish nor fowl; it's not quite a restaurant, but not just a cafe either.
彼の新しい事業はどちらとも言えないようだ。レストランというほどでもなく、ただのカフェでもない。
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The new policy is so vague that it seems to be neither fish nor fowl, making it hard to implement.
新しい政策は非常に曖昧で、どちらとも言えないため、実施が難しい。