He knew that the sources of the red-stained grains were generally closer to the North Pole than were the places yielding a high proportion of "clean" grains.

他知道，这些红色颗粒的来源通常更靠近北极，而不是那些产生大量“干净”颗粒的地方。

youdao

Helen had a dream to walk to the North Pole alone when she was forty.

海伦四十岁的时候有一个梦想：要独自走到北极。

youdao

Next they had to decide on a "natural" length. They chose one ten-millionth of the distance from the Equator to the North Pole.

接下来他们必须决定一种“自然的”长度，他们选择了从赤道到北极距离的一千万分之一，他们将它称作一米。

youdao

Each year I guide ski expeditions across the pack ice to the North Geographic Pole and each year brings new surprises -- severe storms rarely seen in these parts, vast tracts of first-year ice where there should be years of accumulation, pack ice drifting faster and farther than ever before.

CNN: The story

It made me want to do something different, a bit far-fetched, something that no-one would expect me to do - that's why I decided to go to the north pole.

BBC: UK Politics

Artur Chilingarov, an adventurer and deputy speaker of Russia's parliament, led two Russian mini-submarines to the bottom of the Arctic Ocean beneath the North Pole, where he collected gravel and planted the Russian flag.

ECONOMIST: Ventures into the near-abroad