天上有数千颗卫星各行其道,整天马不停蹄地绕着地球转。通信、广播、气象观察和地球资源卫星用途广泛,在国计民生中发挥着重要作用。但是,也有不少是美国和前苏联的间谍卫星,专门用来侦察对方和其他国家的军事机密。当心,第一颗民用间谍卫星不久前也已上天了。你的个人秘密,很可能在国际互联网络上曝光！ There are thousands of satellites in the sky all the time, non-stop round the earth around the clock. Communication, broadcasting, meteorological observation and earth resources Satellite is widely used and plays an important role in national economy and people’s livelihood. However, quite a few are spy satellites from the United States and the former Soviet Union that are devoted to the detection of military secrets of each other and other countries. Beware, the first civilian spy satellite was not long ago. Your personal secrets, it is likely exposed on the Internet!