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pain; anguish; suffering; distress; anxiety; worry; trouble; difficulty; hardship
duhkha (suffering)
人生には苦と楽が両方あるものだ。
Life has both suffering and pleasure.
彼は苦の経験を乗り越えて強くなった。
He overcame suffering and became strong.
苦を知ることで人は成長できると思う。
I think people can grow by knowing suffering.