As we age, the lenses of the eyes thicken, and thus refract light differently.
随着我们年龄的增长，眼睛的晶状体变厚，因此对光线的折射也会发生变化。
Dogs age seven years every time we age one.
我们才长一岁，狗可是老了七岁呢。
Our risk of cancer rises dramatically as we age.
随着年龄的增长，我们患癌症的风险急剧增加。
As we age we lose muscle tissue.
随着年纪的增大，我们会失去一些肌肉组织。
As we age, our skin becomes paler.
随着我们变老，我们的皮肤变得更加苍白。
My research focus is on what happens to our immune system as we age.
我的研究重点是随着年龄的增长，我们的免疫系统会发生什么变化。
This is evidence that our immune system really doesn't function so well when we age.
这证明我们的免疫系统在我们衰老时确实不能很好地发挥作用。
It peaks in young adulthood, levels out for a period of time, and then generally starts to slowly decline as we age.
它在青年时期达到顶峰，在一段时间内趋于平稳，然后普遍会开始随着年龄的增长而缓慢下降。
Cognitive decline is the loss of ability to learn new skills, or recall words, names, and faces that is most common as we age.
认知能力下降是指丧失学习新技能或回忆单词、名字和面孔的能力，这是随着年龄的增长而最常见的现象。
The bad news: Our brains do decline as we age.
坏消息是：我们大脑的记忆能力确实随我们的年龄而下降。
We age because our bodies keep making mistakes.
我们衰老是因为我们的身体持续不断地出错。
As we age, our memory sometimes seems to get worse.
随着年龄增长，我们的记忆有时候好像也会差。
As we grow older, we hope to mature faster than we age.
随着年岁的增长，我们希望能够快点成熟，比我们实际年龄的增长还要快。
As we age, these stem cells tend to become less responsive.
随着年龄增长，这些干细胞往往变得不那么活力。
This has been linked to increasing forgetfulness as we age.
随着年龄而不断增加的健忘与这些受体息息相关。
As we age, though, these caps lose their ability to protect.
不过随着人的衰老，端粒会丧失保护的能力。
As we age, our skin becomes less effective at converting sunlight to vitamin D.
随着我们年龄的变老，我们的皮肤在转换阳光到维他命d的能力也越来越弱。
How We Age: A Doctor’s Journey into the Heart of Growing Old. By Marc Agronin.
《我们如何变老：一名医生的老年人心理之旅》马克·阿格若宁著
While sleep patterns change as we age, the amount of sleep we need generally does not.
虽然睡眠模式随着年龄改变，但是我们需要睡眠的时间一般不会随着年龄改变。
But despite all our advances, it turns out we age and die at the same rate as other primates.
然而，尽管我们取得了各种各样的进步，我们还是在以和其他灵长类动物一样的速度衰老、死亡。
As we age we get stuck in a specific routine and we just look at the world in one single way.
当我们成年后，我们坚持特定的路线，以一种单一的方式看世界。
If we want to be healthy as we age, we have to be the leading scientific country in the world.
如果我们想要在年老时保持身体健康，我们的科技就必须领先全世界。
As we age our metabolic rate naturally slows down, just another joke Mother Nature plays on us.
当我们年长，我们的代谢率会自然地减缓，这是大自然母亲给开我们的另一个玩笑。
Neuroscientists agree that with proper diet, fitness and practice, memory can improve as we age.
神经科学家同意以适当的饮食、健身锻炼、实践记忆可以随着我们的长大而改善。
As we age, we all get this a little bit — but younger men who see it should have their cholesterol tested.
随着我们年龄变大，我们都会多少有点这个环——但如果年轻人有这个的话，就需要查一下自己的胆固醇了。
As we age, we produce less saliva, which washes away bacteria, so teeth and gums are more vulnerable to decay.
随着我们年老，我们分泌更少能冲洗掉细菌的唾液，因此牙齿和牙龈更容易退化。
Sleep patterns change as we age, but disturbed sleep and waking up tired every day are not part of normal aging.
睡眠形式会随着年龄改变，但是每天睡不好、醒来感觉很累可不是正常的老化现象。
AFTER the nagging question of why we are here at all, the one about why we age and die comes a pretty close second.
我们究竟为何来到这世界是个恼人的问题，我们为何变老死亡是紧跟而来的问题。
Additionally, the arousal threshold falls as we age, so that sounds and other interruptions are more likely to awaken us.
另外，随着年龄的增加，半夜惊醒的次数也逐渐增多，声音或其它干扰都很有可能吵醒我们。
In large part, that's because we lose muscle cells as we age. When younger muscle cells get damaged, they're quickly repaired.
在很大程度上，这是因为随着年龄的增长，我们失去不少肌肉细胞。
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