People around the world may feel that the climate has been getting steadily warmer and warmer in recent years.Places which used to be abundant in snowfall have frequently experienced snowfree(无雪的) winters.Drought lasts longer in some dry areas.People find that without air conditioners they could hardly work or fall asleep on hotter summer days.

　　世界各地的人们可能觉察到了近年来全球气候已经逐渐变暖。有些过去会大量降雪的地方现如今却频繁地经历无雪的冬季。一些原本干旱的地区如今也在遭受更持久的干旱。人们发现,如果没有空调,他们几乎无法在炎热的夏季工作或入睡了。