Ichthyosaurs and other contemporary viviparous species, by contrast, gave birth to multiple offspring.

对比之下，鱼龙和其它代生物种可以生育多个后代。

The name comes from the term viviparity, which means giving birth to live young.

这个名字来自“生”这个词，意思是诞生新的生命。

This is our best guess at what the first placental mammal looked like.

这是对第一种生哺乳动物外貌的最好猜想。

The discovery of the fossil makes researchers question the idea that these animals only gave birth to live young.

这颗化石使研究员开始质疑这些动物生这一说法。

Instead, Dr O'Keefe believes he has discovered evidence that plesiosaurs, too, gave birth to live young.

过来，奥基夫博士相信他已蛇颈龙同样靠生繁殖的证据。

Almost all mammals give birth to live young instead of laying eggs, and all mammals feed their babies milk.

几乎所有的哺乳类都是生，而不是卵生，并且所有的哺乳类都会用母乳喂养它们的孩子。

Especially in view of the embarrassing circumstance that his first-born was a girl and not a boy.

谁想到他这个人怎么也会不知羞耻地当众炫耀做父的光彩，何况头生女儿，没有生儿子，本不是什么光彩的事。

He said the findings could be used in the study of other sharks, including those that give birth to live young.

他说这些也可以用于其他鲨鱼的研究，包括那些生鲨鱼。

Maybe because of some genetic reason that prevented viviparity.

也许是因为某些遗传原因阻止生。

And what made it worse was that, instead of tactfully ignoring it, Bernard proceeded to make open comments on this revoltingly viviparous scene.

更糟糕的是，伯纳对这令人作呕的生场面不但不是巧妙地置之不理，倒公开表起意见。

The cori, something between a rat and a rabbit, and supposed by Mr Buffon to be the same with the aperea of Brazil, was the largest viviparous quadruped in St. Domingo.

科里，一种介于老鼠和兔子之间的东西，被布冯先生认为与巴西的 aperea 相同，是圣多明各最大的生四足动物。

Had it survived to birth it would have been about 1.8 metres in length, and about one and a half times as heavy (relative to parental weight) as the offspring of other viviparous species of the time.

如真够成功分娩，幼蛇颈龙的身长可为1.8米左右，体重大约是同时期其它生物种后代的1.5倍（相对于父母的重量）。