With the method to detect if collision would take place or not between space probe and 5800 debris in one day 's interval the computing time will be less than 3 seconds .

利用该方法，检测 一 个卫星与5800个空间碎片在 一天内 是否碰撞，计算 时间小于3秒；

The imagination is a very powerful thing adds Nuttall . It doesn 't take much to imagine one 's own skin in 20 years ' time & William 's story is one we are going to see again and again .

纳托尔补充说到，想象力具有很强大的力量， 一 个人20年后的皮肤状况，这很容易就能想象出来。威廉的故事就是我们反复看到的其中一个。