地震是危害人类的主要灾害之一; 本世纪以来,全世界地震死亡人数超过100万;近百年来,中国发生4.8级以上地震4000多次,55万人死于地震;当前我国正处于第5个地震活跃期;地震短临期预报是一项困扰世界的难题;卫星预报地震,中国航天献给人类的厚礼。 Earthquakes are one of the major hazards that endanger mankind. Since the beginning of this century, more than 1 million people have died of earthquakes in the world. Over the past century, more than 4,000 earthquakes of magnitude 4.8 or above have occurred in China and 550,000 people have died of earthquakes. At present, China is in the fifth Earthquake active period; short-term earthquake prediction is a troubled world puzzle; satellite earthquake, China’s space dedicated to human kindness.