According to the Enironmental Protection Agency, methane is about 20 times more efficient at trapping atmospheric heat than carbon dioxide, the more famous greenhouse gas.
据环保总局透露，甲烷吸收大气热能的效率约是著名温室气体二氧化碳的20倍。
Below the famous flower, a symbol of Valentine's Day, is a column of dust and gas that appears like a rose's stem but extends hundreds of light years.
下面著名的花，是情人节的象征，是一种尘埃和气体出现像玫瑰的干，但扩大了数百光年列。
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