GET ACTIVE: Inactivity can shave almost four years off a person's expected lifespan.

活跃起来：静止不动可以削减一个人近四年的预期寿命。

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With an expected lifespan of three years, the shelters are designed to be more durable and better insulated than traditional refugee tents.

避难所的预期寿命为三年，被设计成比传统难民帐篷更耐用并且保温性能更好。

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And we do know that this number, our expected lifespan, has been rising over the decades.

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In 1935 when the original Social Security Act was established, the average expected lifespan was 62 years.

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In roughly 15 years, Kurzweil estimates, living humans will see their expected lifespan increase by more than a year, every year.

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