All told, these materials account for six percent of our emissions -- on top of the energy emissions required to produce them.

总而言之，除了生产这些材料所需的能源排放量之外，这些材料占我们排放量的 6%。

And so scaling these technologies in places where we do have fossil fuel energy emissions that we could be curtailing does not make sense.

因此，在我们确实可以减少化石燃料能源排放的地方推广这些技术是没有意义的。

It's not all bad news, according to the report, U.S. expansion of clean energy sources cut emissions in the country by a little more than 4%, while European Union's energy emissions fell by almost 9%.

根据报告，也并不全是坏消息，美国对清洁能源的扩大使用使该国的排放量减少了超过4%，而欧盟的能源排放量减少了近9%。