现代医学的进步显著延长了人类的平均寿命。

Advances in modern medicine have significantly increased the average human lifespan.

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Advances in modern medicine have significantly increased the average human lifespan.

lifespan 是复合名词,由 life(生命)和 span(跨度、范围)组成,字面意思是"生命的跨度",即"寿命"的意思。

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