但是，若政府不作出在2012年后降低温室气体排放的承诺，碳市场将仍然难以捉摸，对该市场成功与否至关重要的私营机构，将不愿意持续地、针对性地扩大它们的参与范围。
But, without a commitment by governments to limit greenhouse gas emissions beyond 2012, the carbon market will remain uncertain, and the private sector – vital to the market’s success – is unlikely to expand its participation in a meaningful and sustained way.