An animal species becomes extinct when it fails to produce enough young in each generation to keep pace with the death-rate.
当一种动物不能在每一代都繁殖出足够的后代而与其死亡率保持一致时，它就会逐渐灭绝了。
You succeed (let us say), as modern medicine has succeeded, in enormously lowering the infant death-rate, not only in Europe and America, but also in Asia and Africa.
你成功了（我们假设），正如现代医学所做到的：婴儿死亡率不仅在欧美而且在亚非也大大降低了。
So imperfect was this so-called cure that the death rate attributed to diabetes actually went up.
这种所谓的“治愈”方法是那么地不完美，以致糖尿病的死亡率反而上升了。
The mortality figures were even closer, with a 68.7% death rate aboard the Titanic and 67.3% for the Lusitania.
两船死亡率更接近，泰坦尼克号上的死亡率为68.7%，而卢西塔尼亚为67.3%。
The death rate after haemorrhagic strokes was 25.5% in American hospitals but only 19.8% in OECD countries as a group.
在美国，出血性中风后的死亡率为25.5%，而在全体经济合作与发展组织国家中，该比率仅为19.8%。
In New York City, the Bronx has the highest AIDS death rate of any borough, even though Manhattan has a higher rate of cases.
在纽约，尽管曼哈顿有着更高的感染率，但布朗克斯区的艾滋病死亡率是最高的。
Of the 20 countries with the highest maternal mortality ratios worldwide, 19 are in Africa; and the Region has the highest neonatal death rate in the world.
全球范围具有最高产妇死亡率的20个国家中有19个在非洲；该区域新生儿的死亡率也居世界之首。
Set this against an average death rate for under fives in high income countries of 7 deaths per 1000.
相比之下，高收入国家5岁以下儿童的死亡率为每千活产7例。
Among women who had breast cancer, those who took hormones also had a higher death rate from other causes - 0.05 percent per year, versus 0.03 percent per year.
那些患有乳腺癌，同时服用激素的妇女因其他疾病死亡的几率同样比对照组高，每年的死亡率分别是0.05%和0.03%。
In later years, an increase in the death rate probably made a contribution to further declines in prevalence, while the number of new infections remained more or less unchanged.
在接下来的几年里，死亡率的升高更进一步降低了艾滋病的流行，但新增感染人数变化不大。
An increase of one percentage point in state unemployment rates correlated with a 0.5 percentage point decline in the death rate - or about 5 fewer deaths per 100, 000 people.
州失业率升高1个百分点与死亡率降低0.5个百分点相关联——或者说，大约每100,000人中少死5人。
the TB death rate dropped 40% between 1990 and 2010, and all regions, except Africa, are on track to achieve a 50% decline in mortality by 2015;
结核病死亡率在1990年和2010年之间下降了40%，除非洲之外，所有区域都可按期实现到2015年时使死亡率降低50%这一目标；
The worst state for mortality was West Virginia, where the age-adjusted death rate was more than one-and-a-half times greater than in Hawaii — 958 per 100,000 people.
死亡率上最差的州是西佛吉尼亚，其年龄调整死亡率比夏威夷的高出一半多——每10万人958人。
For 2002-2007, the rate of death from road traffic injuries based on death registration data was about twice as high as the rate reported by the police.
2002至2007年间，根据死亡登记数据得出的道路交通伤害死亡率几乎高达警方报告数据得出的死亡率的两倍。
Although people in France consume fatty foods at a rate comparable to the United States, their death rates from heart disease are far lower in France.
尽管法国人消耗高脂肪食物的比率与美国相当，但法国人死于心脏病的比率要低得多。
By measuring key proteins, they determined that the rate of cell death was significantly slower in the Somah-preserved hearts than it was in those stored with Celsior.
通过测量关键蛋白质，他们发现使用Somah保存的心脏的细胞死亡速度明显慢于在Celsior液中的心脏。
The ONS's annual Focus on Gender report also showed the death rate from alcohol has doubled for men to 18.3 per 100,000 over the past 15 years, and risen from 5 to 8.8 for women.
此外，这项有关“性别差异”的年度报告显示，男性过度饮酒的致死率在过去15年中翻了一番，每10万人中有18.3人因此而死亡；而女性的这一数据仅从5人上升到了8.8人。
The ONS's annual Focus on Gender report also showed the death rate from alcohol has doubled for men to 18.3 per 100, 000 over the past 15 years, and risen from 5 to 8.8 for women.
此外，这项有关“性别差异”的年度报告显示，男性过度饮酒的致死率在过去15年中翻了一番，每10万人中有18.3人因此而死亡；而女性的这一数据仅从5人上升到了8.8人。
By the turn of the century, Pittsburgh had the highest death rate in the United States.
到了世纪交替时，匹兹堡的死亡率居全美之首。
On the other hand, the death rate from flu dropped from 7.4 percent in 2000 to 4.1 percent in 2014.
另一方面，流感的死亡率从2000年的7.4%下降到2014年的4.1%。
Russia's population is shrinking alarmingly, its death rate double that in most developed countries.
俄罗斯的人口正以令人担忧的速度减少，其死亡率是大多数发达国家的两倍。
For persons able to develop an immune response the death rate is usually within the range of 10-15%.
对能够形成免疫反应者，死亡率通常在10- 15%的范围之内。
She collected statistics which proved that the death rate for young soldiers in peace time was double that of the normal population.
她根据收集的统计数据证明在和平时期年轻士兵的死亡率是普通人的两倍。
This death rate may be as high as 25% among people who are displaced, malnourished and have poor access to health care.
这一死亡率在流离失所、营养不良和难以获得卫生保健的人群中可能高达25%。
That may have been marginally bad for their health-but it does not explain the huge jump in the death rate.
这些可能对健康有些不利，但并不能解释死亡率的大幅上升。
What's more, the risks have increased, as shown by the death rate among journalists, which is much higher than in my time.
此外，危险性更大了，现代记者的死亡率大大高于我们那个年代。
What's more, the risks have increased, as shown by the death rate among journalists, which is much higher than in my time.
此外，危险性更大了，现代记者的死亡率大大高于我们那个年代。
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