How does it work?First,the rat is trained to smell people.When this happens,the rat's brain gives a signal.This is sent to a small radio on its back,and then the rescuers follow the rado signals.When the rat's brain activity jumps,the rescuers know that someone is alive.The rat has smalled that person.

How does it work?First,the rat is trained to smell people.When this happens,the rat's brain gives a signal.This is sent to a small radio on its back,and then the rescuers follow the rado signals.When the rat's brain activity jumps,the rescuers know that someone is alive.The rat has smalled that person.

是怎样做到的呢？首先，训练老鼠来识别人的气味。当嗅到的时候，老鼠的大脑会给出一个信号。这一信号会被它背上的一个无线电装置接收然后救援人员就能跟踪信号。当老鼠的脑活动剧烈的时候，救援人员就会知道有人活着。老鼠嗅到了那个人的气味。