Ice ages will be alternated with extremely hot periods.

冰河期将与极热时期交替。

Feel the bitter chill of global ice ages.

感受全球性冰河时期的酷寒。

This whole ice age thing is getting old.

我说，这“冰川时代”可真没劲。

The Yam period coincided with the end of the last ice age.

“甘薯”时期正好赶上最后一个冰河世纪的末期。

I study the cave art of ice age Europe.

我研究冰河时代欧洲的洞穴艺术。

Elk, like many ice age animals, survive almost unchanged.

和其他冰河时代动物一样，麋鹿几乎没太大变化。

Most likely got stuck here during the ice age.

很有可能是在冰河时代的时候被困在了这里。

Dawn on the southeast tip of ice age North America.

冰河时期北美东南端的一个黎明。

We know that happened at the end of the last ice age.

我们知道这曾发生在最后一个冰河时代的末期。

Russian scientist Sergey Zimov is recreating an eco-system from the ice age.

俄罗斯科学家斯格里·希莫夫正在重新创造冰河时期的生态系统。

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

不过在洞穴里，又发现了第二只超大的冰期怪兽。

The hole was formed during the last ice age over 1,000 years ago.

这个洞在上一个冰川期的超过一千年的时间里形成。

Lakes likely formed there at the end of the most recent ice age.

湖泊很可能是在最近的冰河时代末期形成的。

Holocene started about 11,700 years ago at the end of an ice age.

全新世开始于大约11700年前冰河时代的末期。

Ocean currents could be affected, triggering an ice age on the European continent.

洋流可能会受到影响，导致欧洲大陆进入冰河时期。

Should it happen it could create a global cooling event like the ice age.

如果这种情况发生了，就可能会造成像冰河时代一样全球变冷的状况。

It is the only nearly intact bird carcass found from the most recent ice age.

这是在冰河时期最晚期发现的唯一一具几近完整的鸟类尸体。

But how do we know it's an ice age. - Because of all the ice!

但我们怎么知道这是冰川时代。 - 因为都是冰！

But its harvest was once an annual feast for many ice age animals, including mammoths.

曾经桑橙树收获果实的季节，对冰河世纪许多动物来说是一场年度盛宴，包括猛犸象。

The one central defect of Agassiz's theory was that his ice ages had no cause.

阿加西斯的理论有一个致命的弱点，就是他不能解释导致冰河时代出现的原因。