Although the research station is far from major sources of human pollution, atmospheric circulation brings air from Europe and North America into the Arctic region.
虽然这个研究站远离人类主要的污染源，但是大气环流会把欧洲和北美的空气带到北极地区。
For the Middle East and North Africa (MENA) region, one of the world's most water-scarce regions, this challenge is far greater.
对中东和北非(MENA)地区(世界上最缺水的地区之一)来说，这个挑战更为艰巨。
In Iowa, that region is the north-western part of the state, which enjoys high crop yields but gets 25-50 cents less per bushel because it is too far from the Mississippi river barges.
在艾奥瓦，类似的地区处于该州西北部，虽然农业产量高，但每蒲式尔少挣25到50美分，因为该地区远离密西西比河驳船码头。
Canada is launching a series of military exercises in the Arctic far-north region of the country.
加拿大在国土北极地区开展一系列的军事演习。
Canada is launching a series of military exercises in the Arctic far-north region of the country.
加拿大在国土北极地区开展一系列的军事演习。
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