英语翻译How does it work?First,the rat is trained to smell peopl

英语翻译
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.