两天前,儿子独自一人来到这个城市。现在,父亲要送他回去。他们来到火车站,却在候车室的入口停下来。两个人盯着安检仪的小屏幕,那上面不断流动着各种箱包和编织袋的轮廓。男人说:“看到了吗,把行李放进去,屏幕上就会照出行李里面的东西。看看,这是一个脸盆……可是,它为什么能照出里面的东西呢?”男人低下头问他七岁的儿子。“是X光的原因,你昨天刚跟我讲过的。”儿子说。 Two days ago, the son came to this city alone. Now, my father will send him back. They came to the train station but stopped at the entrance of the waiting room. Two people stared at the small screen of the security device, which continuously flowed all kinds of bags and bags outline. The man said: “Did you see it, put the baggage in, the screen will show the contents of the baggage. Look, it’s a washbasin ... But why does it take pictures of the things inside?” The man Bow down and ask his seven-year-old son. “It’s the reason for X-rays, you told me just yesterday.” "My son said.