用信用卡代付的金额通常要好几个月才能偿清。
据斯坦福大学卡内基研究所的气候科学家肯·卡代拉估算，地球上风中蕴含的总能量是人类所需的100倍。
Ken Caldeira, a climate scientist at Stanford University's Carnegie Institution, has estimated that the total energy contained in wind is 100 times the amount needed by everyone on the planet.
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