The secret to longevity is an age old question.

长寿秘诀是个古老问题。

A lively approach to celebrate an age old icon.

用活泼方式来庆祝这座烙上古老时代印记建筑。

It made the legal voting age 18 years old for the entire country.

它规定18岁为整个国家合法投票龄。

There's the difference now between man's old age and matter's.

人老了和东西老了就是有这种差别！

The fastest rate of increase was among adults aged 25 to 49 years old.

（病例中）增长速度最快是25岁至49岁成人。

He's coming in at an age far too old for YouTube, at 36.

他 36 岁纪，对 YouTube 来说太老了。

And only a bit over four percent of the population is of retirement age older than 65.

而 65 岁以上退休龄人口仅占总人口 4% 多点。

The children's hospital in Cincinnati, Ohio recently conducted brain scans of children ages three to five years old.

辛辛那提儿童医院，俄亥俄州最近对三到五岁孩子进行了脑部扫描。

This portmanteau means the age in between childhood and the teenage years, or around 10 to 12 years old.

这个混成词意思是童和青少之间龄，或者大约 10 到 12 岁。

And it's an age old question, right?

这是个古老问题，对吧？

New scientific research has found that being obese in middle and old age can reduce the risk of developing dementia.

新科学研究发现，中老肥胖有可能降低患痴呆症风险。

Ah, the age old debate of introverts versus extroverts.

啊，关于内向者与外向者古老争论。

Saving you money, cutting down on food waste, and answering the age old question, what should we have for dinner?

为你省钱，减少食物浪费，同时还回答了个老问题：我们晚餐该吃什么？

President Trump's biggest age old challenge in Vietnam will likely be convincing APEC leaders of his views on free trade.

特朗普在最大旧挑战是说服APEC领导人赞同他在自由贸易上观点。

Certainly, an age old question, which is itself a popular adage.

当然，这是个古老问题，它本身就是句流行格言。

One should reserve that to give an interest to one's old age.

个人应该保留那个给晚兴趣。

There are 75.4 million Americans age 18 to 34 years old in the U.S.

美国有 7540 万龄在 18 至 34 岁之间美国人。

So question twelve how does the man evaluates the old age?

那么问题12这位男士如何评估自己老生活？

This is the age old question: nature or nurture?

这是个古老问题：先天还是后天？

And Anatol Rappaport actually died about a month ago at quite an old age, a great scientist.

阿纳托尔·拉帕波特（Anatol Rappaport）实际上是在大约个月前去世，他是位伟大科学家，事已高。