Projects often have lifespans of 25-30 years, and reliability is paramount.

项目通常都有25到30年的使用期限，可靠性是最重要的。

Not only is the dollar bill lightweight, but it also has a brief lifespan.

美钞不仅重量轻，而且使用寿命短。

By the fourth century, after a lifespan of over a millennium, the Roman Empire declined.

公元4世纪，在经历了一千年后，罗马帝国开始走下坡路。

Blue zones are areas of the world where people live longer than the average lifespan.

在蓝色区域人们的平均寿命超过世界其他地区。

Of these options, the worker honeybee has the shortest lifespan at around 40 days.

在这些选项，蜜蜂的寿命最短，40天左右。

A lifespan is the length of time someone is normally expected to live.

寿命是一个人通常预期能的时间长度。

Adopting eight simple healthy habits could help increase your lifespan by decades, a survey finds.

一项调查发现，养成八个简单的健康习惯可以帮助你延长几十年的寿命。

For reference, the average lifespan of a rabbit is between three and 12 years.

作为参考，一只兔子的平均寿命在3到12年之间。

Scientists think that lower metabolic rates are directly linked with longer lifespans.

科家认为低代谢率与长寿直接相关。

C) They may affect the lifespan of telomeres.

C）它们可能会影响端粒的寿命。

ARGENTINA'S first bond, issued in 1824, was supposed to have a lifespan of 46 years.

1824年，阿根廷第一次发行债券，原本预期期限为46年。

The average lifespan in the US is 79.

美国的平均寿命是79岁。

Short noodles are a symbol of bad luck and a shortened lifespan.

短面条是运气不好和寿命缩短的象征。

Biologists have known for decades that feeding animals near-starvation diets can boost their lifespans dramatically.

物家几十年来都知道在动物保持接近饥饿的状态下喂食能大幅度提高它们的寿命。

KenekEdge asked, " Is health span like lifespan? "

KenekEdge 问，健康期就像寿命吗？

Most of us know what lifespan is, it's basically how long you're alive.

我们大多数人都知道寿命是什么，基本上就是你能多久。

For the Sun, that total lifespan is about 12 billion years, give or take.

太阳总的寿命大概是120亿年。

Now, what if we could increase the lifespan of concrete that's already been poured?

如果我们可以延长已被倾倒的混凝土使用期限呢？

Now, one theory around this is around the percentage of our lifespan.

现在，有一个理论认为这与我们命的百分比有关。

And they say the average lifespan for a butterfly is two weeks.

他们说蝴蝶的平均寿命是两周。