Greenhouse gas emissions of tar sands crude are 40% higher than conventional oil, and the open-pit mining has devastated Alberta's boreal forest.

焦油砂的温室气体排放量比普通石油高40%，露天采矿已经极大地破坏了阿尔伯塔的北方气候带森林。

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Even if no random event rises from a tar pit somewhere, investors say they are worried about three issues, which center on the wounded American consumer, China and the Federal Reserve.

即便没有“天降大事”于股市，投资者表示有三个让他们焦虑的问题，主要集中在受创的美国消费者、中国和美联储。

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The pit cover should be sealed over with tar paper or plastic.

顶盖必须用焦油纸或塑料封闭。

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Marvin Gaye, Bob Dylan - the best ones, you know, the ones that really were - imply something specific, but don't trap themselves in that, you know, the tar pit of that moment.

NPR: Joe Henry Is a Still Driving Man

And it is easy to imagine how this leads to the tar-pit of self-pity.

CNN: Amputees never say 'I can't'

We know that those with so-called disabilities don't fall into the pity tar-pit and in fact, do better than they or anyone around them ever thought possible.

CNN: Amputees never say 'I can't'