the difference between the effects of the carbon footprint of a country, group, person, etc. and anything that has been agreed or done to reduce these effects 碳债务， 碳债 （碳足迹效应与已承诺或已实施的碳减排之间的差额）A massive carbon debt will be created when the forests are harvested. 采伐森林将产生巨额碳债务。 With the continued use of fossil fuels, the country’s carbon debt increases each year. 随着继续使用化石燃料，该国的碳债务逐年增加。