Have you seen some machines called "Little Yellow Dog" that eat rubbish and give some
money to the users? Recently, such machines have at universities in Chongqing. They can turn rubbish into treasure and encourage the public to used things. The machine is as big as a fridge. If the users put an empty bottle in the machine, it will be identified（识别） by small camera. Then it will be put into a built-in bin. The users can get some. They can also give it away.
The machine will tell the company's head office it is filled with bottles. Nearby stations will send workers to have bottles collected. The workers will pack( 打 包 装 )and them to the company.
Now the machinenot only plastic bottles but also other resources. These machines couldencourage the public to protect the environment. People can also see machines in Shanghai in the future. There will be more machines at some large stations, bus stops, neighborhoods and schools. But recycling is not enough, experts say. Making waste in the first place is the way forward. Let's work together to make a better world.
