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therefore; for that reason; so; because of that
彼は努力した。それゆえ成功を収めた。
He worked hard. Therefore, he succeeded.
それゆえに私はこの道を選んだのだと思う。
I think that's why I chose this path.
問題は複雑だ。それゆえ慎重に対処すべきだ。
The problem is complex. Therefore, we should handle it carefully.