单词	black carbon
释义	black carbon noun : a granular form of pure carbon that is the primary component of soot But soot—also known as black carbon—from tens of thousands of villages like this one in developing countries is emerging as a major and previously unappreciated source of global climate change. Elisabeth Rosenthal, New York Times, 16 Apr. 2009 The chief culprit in global warming is carbon dioxide, but recent studies show that black carbon may account for as much as half of Arctic warming. Bill Walker, In Brief, Summer 2009 Word History First Known Use 1825, in the meaning defined above
随便看	giant scallop giant schnauzer giant sea perch giant seaperch giant sequoia giant silkworm giant skipper giant slalom giant sloth giant snail giant squid giant squirrel giant star giant star grass giant stars giant stride giant sunflower giant swing giant toad giant tortoise giant water bug giant water lily giant whortleberry giant wild pig giant wild rye

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