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单词 laughing gas
释义 laughing gas
Nitrous oxide, N2O; so called from the exhilarating effects it produces when inhaled. (See also gas n.1 3 d.)
1842Brande Dict. Sci., etc., Nitrous oxide... When nitrous oxide is respired, it produces effects somewhat similar to those of intoxication; hence it has been called laughing gas.1869Daily News 2 Jan., Protoxide of nitrogen, more commonly called laughing-gas.
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