时光过得真快呀!转眼间窗外已是落叶纷纷的深秋,寒冷的冬天马上就要到了。我们常常在夏天抱怨天气的炎热,在冬天畏惧天气的寒冷,在抱怨和畏惧里,日子也就这么过着。可是,你是否想过,人类也许可以换一种生存方式,来躲避这冷冷热热的天气变化?在下面这篇散文中,美国著名的科普作家艾萨克·阿西莫夫为我们描绘了一种全新的生活图景——新洞穴生活。你是否有兴趣走入洞穴,感受一下那激动人心的“穴居”生活? The time flies so fast! There is a lot of falling leaves in the late autumn, and the cold winter is coming soon. We often complain about the heat of the weather in the summer, the fear of the cold weather in the winter, and the days of complaints and fears. However, have you ever thought that human beings may be able to avoid this hot and cold weather by changing the way of life? In the following prose, the famous American science writer Isaac Asimov described for us. A new life picture - a new cave life. Are you interested in walking into the cave and feeling the exciting “burrowing” life?