However the sharp increase in temperatures over the past year has surprised many scientists, and prompted concerns about a possible acceleration of heating.

过去一年气温的急剧上升让许多科学家感到惊讶，引发了科学家对于全球变暖加速的担忧。

The U.S. National Weather Service says firefighters will have to deal with temperatures as high as 43 degrees Celsius over the next few days.

美国国家气象局表示，未来几天消防员将面临43摄氏度的高温。

Researchers in the United States say analysis of temperature records over more than 50 years indicates that the western Antarctic Ice Sheet is warming nearly twice as fast as previously thought.

美国研究者称过去50多年来对温度记录的分析表明，南极冰原西部正以比料想的两倍速度开始变暖。