China is still a relatively young country, with a median age of around 30.
中国仍然是一个相对比较年轻的国家，人口的平均年龄约30岁。
A total of 1409 participants were enrolled, all female, with a median age of 45.
共有1409名参与者，均为女性，中位年龄为45岁。
The women, who were a median age of 35 years old at diagnosis, were observed for 17,408 person-years.
这些年龄中值为35年的诊断，是这些年观察17408名得出的。
Nuclear reactors generate only 14% of the world's electricity, and with a median age of about 27 years (see chart) and a typical design life of 40 a lot are nearing retirement.
核反应堆发电量仅为全球总发电量的14%，而其年龄中位数为27年（见图表），设计寿命一般为40年，许多反应堆正临近退役。
Indeed, every network except Fox had a median age of 50 or over last year. That is significant because advertisers tend to be most interested in how a show rates among people aged between 18 and 49.
的确，去年除FOX之外，其他所有的网络媒体受众平均年龄都达到50多岁。由于广告商更关注节目在18 - 49岁观众中的反响，这个现象(对于传媒业来说)意义深远。
Its median age is now 33, up from 26 in May 2008, while the average Twitterer is still 31, a figure that has remained stable over the past year.
其用户的中位数年龄是33岁，而在2008年的5月时是26岁，而Twitter用户的平均年龄依旧是31岁，自去年以来没有变化。
When a country is ageing (median age above 40), it again has a high dependency ratio, this time because of old people.
而当一个国家趋向老迈时(中位年龄在40岁以上)，依赖性比例仍然高，这是因为老人多的原故。
Since 2003 the median age of a prime-time CBS viewer has increased by three years, according to Nielsen, a research firm. Viewers of ABC and NBC are five years older; Fox's, seven and a half.
据调查公司“尼尔森”称，2003年以来CBS(哥伦比亚广播公司)的观众年龄中位数增长了三年，而ABC(美国广播公司)和NBC(美国全国广播公司)则增长了五年，福克斯电视台更是增长了七年半。
When fertility is high and a country is young (median age below 20), there are huge numbers of children and the overall dependency ratio is high.
一个国家生育率高，表示这个国家很年轻（中位年龄在20岁以下），小孩数量庞大，依赖性比例相当高；
At the moment, Africa has larger families and more dependent children than India or Arab countries and is a few years younger (its median age is 20 compared with their 25).
现在非洲和印度及阿拉伯国家相比，家庭更大，抚养的孩子更多，而且也更年轻(非洲中位年龄是20岁，相对于印度阿拉伯的25岁)。
Since 2003 the median age of a prime-time CBS viewer has increasedby three years, according to Nielsen, a research firm. Viewers of ABC and NBCare five years older; Fox’s, seven and a half.
根据尼尔森收视调查，2003年起，CBS黄金时段收视群的年龄中间值多了3岁，ABC和NBC多了5岁，福斯多了7岁半。
Their median age at death was about a fifth higher than that of their unmodified Cousins.
它们死亡年龄的中位数比参照组的高五分之一。
Baseline characteristics were well balanced between the two arms: median age was 54, a high percentage of patients were Asian (42%) or white (~ 54%), and 61% were never smokers.
两组的基线特征基本一致：患者的中位年龄是54岁，大多数为亚洲人(42%)和白人(~ 54%)，61%患者不吸烟。
This photo shows a group of 9-year-old boys and girls in Tanzania who stand below the median height for their age.
这张照片是一组来自坦桑尼亚的九岁小朋友们，他们的身高都不到同龄人的中位数。
Although in many countries we can assist to a gradual increase in the median age of first marriage, this has been mainly restricted to children from families with higher revenues.
尽管在许多国家我们可以看到初婚的平均年龄在逐渐提高，但这主要限于那些较高收入家庭的孩子。
The median age at onset for generalized anxiety disorder is 30 years; however, age at onset is spread over a very broad range.
广泛性焦虑障碍起病的中位年龄为30岁，而起病年龄的跨度很大。
In 1960, the median age for a first marriage was 20 for women and 22 for men, and just one in 10 people over 25 had never married.
1960年，女性初婚年龄的中位数是20岁，男性是22岁。25岁以上的人群中未婚者仅占十分之一。
In that time the median age in America has probably risen by a year and a bit.
同时期美国人的年龄中间值只增加了大约1岁多一点。
In that time the median age in America has probably risen by a year and a bit.
同时期美国人的年龄中间值只增加了大约1岁多一点。
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