He escaped a prison sentence by reason of unsound mind at the time the crime was committed.

他以犯罪时精神不正常为由逃过了监禁刑罚.

《简明英汉词典》

The suicide was of unsound mind when she committed the deed.

她自杀时精神失常.

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The poor man killed himself while he was of unsound mind.

那可怜人在神志不清时自杀了.

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Unsound mind, like unsound body, if you feed, you poison.

不健全的思想犹如不健康的身体, 吃下去要中毒.

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