Another arctic blast is about to turn the Midwestern US into an icebox.

美国中西部地区即将遭受另一股极地寒流侵袭，气温将大幅下降。

The only way to be in the polar vortex is to be in an airplane.

在极地漩涡中唯一方法就乘坐飞机。

It wasn't available to earlier polar explorers, whose diet was commonly insufficient for their health.

早期极地探索者无法使用种方式，他们饮食普遍对身体不好。

There's this thing called the polar vortex we've told you about before.

我曾经在节目中提到过极地涡旋。

Here are polar caps in sunbake deserts, giant volcanoes , mighty canyons.

里有沙漠极地沙帽, 巨大火山、神谷。

Sea levels will rise as ice around the Earth's poles continues to melt.

极地冰川持续融化会使海平面升高。

I was on the Mars Polar Lander team in 1999.

我在1999年火星极地着陆者计划。

So a huge success would vindicate all those years leading to Polar Lander.

所以巨大成功可以一扫些年极地着陆者失败苦闷。

At some point in this sequence, the earlier Mars Polar Lander failed and crashed.

在串事件某一处，早先火星极地着陆者失败并坠毁。

Modern animals that migrate to polar climes, notably birds, do often breed there.

迁徙到极地现代动物，特别鸟类，通常会在那里繁殖。

Young polar cod are pelagic, meaning they live at or near the surface.

年幼极地鲟鱼海洋生物，也就说他们生活在或者接近海平面。

He is a professor of polar science and environmental geophysics at Newcastle University in England.

他英国纽卡斯尔大学极地科学和环境地球物理学教授。

The melting of polar ice shelves has scientist worrying about rising sea levels.

极地冰架融化让科学家担心海平面上升。

This year, temperatures in the polar area have been especially intense.

今年，极地地区温度一直在急剧升高。

But the polar vortex did not have the same effect everywhere.

但次极地涡旋在各地影响并不相同。

Leshin worked on the Mars polar lander that crashed in 1999.

莱欣曾参与了1999年坠毁火星极地着陆器工作。

Won Young Lee is a biologist at the Korean Polar Research Institute.

李元英韩国极地研究所生物学家。

We will need to assimilate into globally diverse societies, living in new, polar cities.

我们居住在全新极地城市，需要融入全球多元化社会。

Those are some big words on mountains or near the poles.

那些在山脉或靠近极地大词。

As the polar ice caps melt, ocean levels will rise.

随着极地冰层融化，海平面将上升。