translation.en: But in order to get to this limit of two degrees, which is possible for us to survive, the IPCC, the Intergovernmental Panel on Climate Change, defines that we have a budget of emissions of 1,000 billion tons of CO2 from now until the end of the century.
translation.zh: 但为了得到这 2℃ 的限制 — 也就为我们赢得了生存空间， IPCC — 政府间气候变化专门委员会， 限定说到本世纪末，二氧化碳排放量 配额是 10000 亿吨。