average temperature rise

The world is heading for an average temperature rise of nearly 4C (7F), according to analysis of national pledges from around the globe.

根据针对全球范围内的国家条约作出的分析，全球平均气温将上升将近4摄氏度（7华氏度）。

Although the average temperature rise doesn't look too much, but the changes more performance for more frequent extreme highest temperature value to appear.

虽然平均气温的上升看起来并不太多，但这种变化更多表现为更频繁的极端最高气温值的出现。

showed that if global emissions do not peak and begin to fall by 2020, keeping the global average temperature rise since pre-industrial times below 2C will be difficult.

《自然—气候变化》期刊周末发表的一项研究表明，如果全球排放到2020年没有达到峰值并开始下降，将很难使全球平均气温自前工业时代以来上升幅度保持在2度以内。