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(not) so; (not) particularly; (not) very; (not) that much
この問題はさほど難しくないと感じた。
I felt this problem wasn't that difficult.
今日の気温はさほど高くないので過ごしやすい。
Today's temperature isn't that high so it's comfortable.
彼の話はさほど面白くなかったと思う。
I don't think his story was that interesting.