つきつめる
to probe deeply, to investigate thoroughly, to pursue relentlessly
verb
問題の本質を突き詰めることで、真の解決策が見える。
By thoroughly examining the essence of a problem, the true solution becomes visible.
彼は理論を突き詰める癖があり、深い思考家だ。
He has a habit of pushing theories to their limits, making him a deep thinker.
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