a key element in the system of national and international carbon trading. A country or organization has the right to produce a particular amount of carbon dioxide and other gases that cause global warming, which is expressed in terms of carbon credits, which may be traded between countries or organizations.碳信用（指有权拥有且可交易的温室气体排放量）
The sale of carbon credits can finance renewable energy projects.碳信用额的销售可为可再生能源项目提供资金。🔊🔊
a carbon offset, which a person or company may choose to buy as a way of reducing the level of carbon dioxide for which they are responsible碳补偿信用额（购入后用以抵消自身碳排放量）
Wind energy companies sell carbon credits to consumers.风能公司向消费者出售碳补偿信用额。🔊🔊