白垩纪

Picture it as one big jungle from the cretaceous period.

图片它作为一个从白垩纪大丛林。

It lived in the cretaceous period of history.

它生存于白垩纪时代。

Flowering plants appeared in the Late Jurassic period, and in the Early Cretaceous period the first flowers appeared.

有花植物出现在侏罗纪晚期，在白垩纪早期，第一朵花诞生了。

Deinonychus lived 110 to 100 million years ago. That time was called the Cretaceous period.

恐爪龙生活在1亿~1亿1000万年前，这个时候叫做白垩纪。

That time was called the late Cretaceous period.

无齿翼龙生活在6000万年前，这个时候是白垩纪晚期。

Gen. et sp., from the Aptian Albian Xinminpu Group of western China that represents a phylogenetic, morphological, and temporal link between these disjunct portions of tyrannosauroid evolutionary history.

古生物学家对霸王龙家族的了解主要建立在来自白垩纪时期两组截然不同的化石基础之上，这些化石距今大约1.45亿至6500万年前。

This story, though, raises the question of why there is but a single ejecta layer of iridium and shocked quartz in late Cretaceous rocks around the world.

然而，这却引发了一个问题：为什么全世界只有一个白垩纪后期的铱和受震石英熔岩层。

I am on an Oligocene beach, an Eocene beach, a Cretaceous beach -- the scene is the same.

我正在渐新统的海滩上，或在始新世的海滩上，或在白垩纪的海滩上——场景不变。

But if you're going to T-Rex to see dinosaurs, those 50 minutes might feel like an eon.

但是如果你回到白垩纪去看看那些恐龙，50分钟让你感觉是值得的，永世的。

His waistcoat was creased, there was a button off his glove, his coat looked as if it was dusty with French chalk.

他的背心弄皱了，手套上有个钮扣，他的外套满是白垩纪的灰尘。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。