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to go to ruin; to go under; to fall; to be destroyed; to die out; to become extinct; to perish
環境破壊が続けば人類は亡びるかもしれない。
If environmental destruction continues, humanity may perish.
かつて繁栄した文明も戦乱で亡びることがある。
Even once-prosperous civilizations can perish through war.
伝統を守らなければ技術が亡びてしまう。
If traditions are not preserved, the techniques will be lost.