Even less well understood are the cycles of comparative balminess within ice ages, known as interglacials.

对于一个川期内被称为间期的一段气候相对暖和的时期，我们对其周期尤其缺乏了解。

They moved into the area during warm periods, called interglacial periods.

他们温暖的时期进入该地区，称为间期。

The records show cold years with long stretches of early ice, warm years with less.

记录显示，寒冷的年份会有一个较长时间的早期期，而温暖的年份的则相对较短。

But in the cave, a second, super-sized ice age monster was found.

不过穴里，又发现了第二只超大的期怪兽。

And now we have Tierney's new results on the temperature difference between glacial and interglacial conditions.

现我们还掌握了蒂尔尼关于期和间期之间的温差研究的新结果。

At the end of the Ice Age, the huge lion and the gigantic bear were pushed to desperate measures.

期末期，巨大狮子和熊被逼得孤注一掷。

We're coming to the end of the Pleistocene, the end of the Ice Age.

我们来到更新世的末期，是期尽头。

The end of the Ice Age saw a world that was melting away.

期末期整个世界消雪解。

To answer that, we have to go back to the mighty ice age glaciers that covered almost half the continent.

为了回答这一问题，我们需要回到河时代，看看覆盖了半片大陆的大期川。

The Ice Age favored power over speed.

期钟爱力量多过速度。

The other Great Lakes' ice seasons are shrinking as well, by an average of about half a day per year.

其他五大湖的期也减少，平均每年减少约半天。

Laying 30 meters below the opening in an underground cavern, they found the remains of thousands of ice age mammals.

口下方30米处的一个地下穴，他们发现了数千具期哺乳动的遗骸。

The end of the Ice Age set off a major movement of species.

期的末期引发了种的大规模移动。

Within that, you have cycles of “glacial periods” and “interglacial periods”.

其中，你有“期” 和“间期” 的循环。

The thinner atmospheric blanket caused Earth's first, and possibly longest, ice age, the Huronian Glaciation.

稀薄的大气层引发了地球上首次，也可能是持续时间最长的期——休伦期。

But geologists call it the Last Glacial Maximum.

但地质学家称之为末次盛期。

And now we have Tierney's new results on the temperature difference between glacial and interglacial conditions.

而现我们有了蒂尔尼关于期和间期温度差异的新研究成果。

But during the warmer interglacial periods, forests bounced back.

但温暖的间期，森林又恢复了。

Because the Holocene is defined as having begun when the last major Ice Age ended.

因为全新世被定义为从最后一个重大期结束时开始。

So we got the OD, we got the YD.

所以我们有了末次期，也有了新仙女木期。