汽车工程师们一直都很清楚，设计小排量、重量轻的汽车是满足不断提高的燃油经济性标准最理想的途径。
Engineers have long known that designing smaller, lighter vehicles is an ideal way to meet tighter fuel-economy standards.
一年之后(2012年7月)，EPA则将会把更小型的排放者纳入其中，但排量标准仍在50000吨以上。
By July 2012, it will begin to weigh smaller emitters, but none under 50, 000 tons.
另一方面来自不同项目和企业产生的减排量进入碳金融市场进行交易，被开发成标准的金融工具。
On the other hand from different projects and enterprises produced into carbon emissions reductions in financial markets traded, being developed into standard financial instruments.
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