translation.en: First of all, this is where we're projected to go with the U.S. contribution to global warming, under business as usual. Efficiency in end-use electricity and end-use of all energy is the low-hanging fruit. Efficiency and conservation -- it's not a cost; it's a profit.
translation.zh: 首先，这是我们估计到的关于美国对全球温室效应的贡献， 在普通情况下对于电力和能源的最终使用的效率 就像踮脚就能够着的果实，非常低的。 效率和对自然环境的保护：