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to come to know; to perceive; to realize; to realise; to become aware (of)
失敗して自分の限界を思い知った。
Through failure, I came to know my own limits.
厳しい現実の中で非力さを思い知っている。
I am coming to know my own powerlessness amid harsh reality.
挫折を経験することで真実を思い知ることができる。
Through experiencing setbacks, you can come to know the truth.