Alaska may look remote and pure, but no place on the earth is immune to air pollution, environmental contamination, and global warming that affects all of us.
阿拉斯加或許看似遙遠純淨,但是地球上沒有一個地方可以免受空氣的汙染,環境的汙染,和影響我們所有人的全球變暖問題。