2. Temperatures in 2015 also shattered the previous record set in 2014 by 0.13C, according to Nasa.
3. vt. 建议，推荐，劝告
5. Yet expectations for the summit meeting on Tuesday are low, with no sign of any political breakthrough that would lead to more ambitious efforts. Scientists say emissions must peak within the next few years, and then begin to decline, if the world is to have any hope of keeping global warming to an upper limit that countries agreed on five years ago. So far, no plans are in place that would come close to achieving that.