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）。
The average temperature of the world could rise by 6.3c by the end of this century.
到本世纪末全球平均气温将会升高6.3c。
It is true that the average temperature rise is only about two degrees, but that has been enough to start the glaciers receding in many parts of the world.
确实，平均气温升高仅二度左右，但这已足以引起世界上许多地区冰川的消退。
It is true that the average temperature rise is only about two degrees, but that has been enough to start the glaciers receding in many parts of the world.
确实，平均气温升高仅二度左右，但这已足以引起世界上许多地区冰川的消退。
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