In order to spin off the Moon, Earth would have had to rotate so fast that a day would have lasted less than three hours.
为了脱离月球，地球必须旋转得如此之快，以至于一天持续的时间少于三个小时。
2
2014 through 2017 rank as the hottest years on record and the Arctic is warming twice as fast as any place else on earth.
2014年到2017年是有记录以来最热的年份，而北极变暖的速度是地球上任何其他地方的两倍。
3
Overall, Earth is warming at a rapid pace—2014 through 2017 rank as the hottest years on record—and the Arctic is warming twice as fast as anyplace else on Earth.