Write a 50-word composition in English about the phenomenon of thief robbery, with translation.

One day, while I was reading an interesting book, my father came in and asked me to buy him a bottle of beer. I went downstairs and got on my bike. When I got to the shop, I went in without locking my bike. A few minutes later, I came out of the shop. Suddenly, I saw a man riding on my bike and trying to escape. I ran to him at once. But he's too fast. I could never catch up with him. Just then, a police car happened to come. I went over to ask them for help. They hurried after the thief. A bicycle will never run faster than a car. So the thief was caught soon. I got my bike back.