In the United States, 12% of all live births in 2010 were preterm.

美方面，2010年活产婴儿中早产儿所占的比率高达12%。

The maternal mortality rate has dropped to 18 per 100-thousand live births last year.

孕产妇死亡率下降到18.3／10万。”

That would mean that over nine babies' lives are saved for every 1,000 live births.

那意味着，在每1000 位新生儿中，有超过 9 名婴儿的生命被挽救回来。

The first woman to have a live birth from a transplanted womb had a baby boy last month in Sweden.

第一位接受子宫移植手术的妇女上个月在瑞典生了个男孩。

In Cambodia, the maternal mortality rate is 170 deaths for every 100,000 live births.

在柬埔寨，孕产妇死亡率为每 100, 000 名活产婴儿中就有 170 人死亡。

Twenty-five years ago, Tung Raththavy explained, Cambodia had 900 deaths for 100,000 live births.

25 年前， Tung Raththavy 释说， 柬埔寨有 900 人死亡， 每 100, 000 人活产。

And, again, the result paralleled the general population: 86 percent of pregnancies resulted in live births.

而且，结果再次与一般人群相似：86% 的怀孕导致活产。

Okay, so boas and pythons are both constrictors they're both snakes, they're both reptiles, but boas have live birth and pythons lay eggs.

好吧，蚺蛇和蟒蛇都是蟒，它们都是爬行动物，但是蟒蛇有活产，蚺蛇产卵。

One is a straight birth rate: in a given year, how many live births are there for every thousand people?

一是直接出生率：在一年，每千人有多少活产？

But at some point, mammals, as well as some reptiles, took this a step further with the ability to give live birth.

但在候，哺乳动物以及一爬行动物在这方面更进了一步，具有活产的能力。

Now I want to talk a little bit about how the evolution of the female womb and live births came to be.

现在我想谈谈女性子宫和活产的进化是如何发生的。

Turns out, male fetuses are much worse at surviving an uncomfortable gestation environment, although for both sexes, abdominal pregnancies very rarely produce a live birth.

原来，男胎儿非常不能存活在一个不舒服的孕育环境，虽然对两个性别来说，腹部怀孕很难产下活胎。

In the late 1970s, the infant mortality rate for the children of illiterate mothers was around 110 deaths per thousand live births.

在 20 世纪 70 年代晚期，文盲母亲子女的婴儿死亡率大概在 110/1 000。

At the time, he said he believed gene editing of human embryos resulting in live births was legal in China. The country had no law specifically banning it.

当他说，他认为基因编辑人类胚胎并让其出生在中是合法的。中没有专门的法律禁止这类行为。

Black children have a 500 percent higher death rate from asthma compared with white children and have nearly twice the national average infant deaths per 1,000 live births.

与白人儿童相比，黑人儿童哮喘导致的死亡率高出 500%，并且每 1000 个活产婴儿中，黑人婴儿的死亡率几乎是平均水平的两倍。

Because of this, we might use what’s called a total fertility rate: the number of live births for every 1000 women between the ages of 15 and 44.

因此，我们可能会使用所谓的总生育率：15 至 44 岁之间每 1000 名妇女的活产数。

There is a powerful statement that you make in the book about this that milk started under the feet of dinosaurs, but live birth took hold in an apocalypse.

您在书中对此做出了强有力的陈述，即牛奶起源于恐龙脚下，但活产在世界末日中扎根。

Under the banner of Committing to Child Survival: A Promise Renewed, more than 170 countries have pledged to scale up efforts to lower preventable child death rates to 20 or fewer deaths per 1,000 live births by 2035.

在“重申承诺: 致力儿童生存”的旗帜下，170多个家承诺加大努力，将可预防的儿童死亡率在2035年之前降低到每1000人20个死亡的水平。