到2007年，杜邦公司通过提高能效一年节省22亿美元，和它那年公布的总利润一样多。
By 2007, DuPont was saving $2.2 billion a year through energy efficiency, the same as its total declared profits that year.
2008年全年用电，比前一年节省八千多度。
In 2008, more than 8000 kilowatt hours of energy were saved from the previous year.
露营可以为你一年节省数百美金，在当今节约经济的环境下，这是其中一个最大的优点。
Camping can save you hundreds of dollars a year, and in today's economy that is one of the biggest advantages right there!
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