Hardship and penury wore him out before his time.

受穷受苦使他未老先衰.

《简明英汉词典》

Worry and illness had made him prematurely old.

他心事重重、疾病缠身,落得个未老先衰.

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I am growing old before my time.

我未老先衰.

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He was so lazy that he rusted out when he was still young.

他懒极了,因此未老先衰.

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He was too lazy to exert himself and rusted out long before his time.

他懒得萎靡不振,因此早就未老先衰了.

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