Dr.Jack Tod is very interested in cleaning water.So it's natural that he is to develop a small and cheap system(系统) to clean waste water.His"Living Machine" can clean waste water in your home or in your business.
.The waste water goes into a big plastic tank where bacteria(细菌)start to break down the waste.A few days later after it is dealt with,the water is brought into a greenhouse filled with plants and Fish. the plants and animals remove(去掉)more chemicals from The water, making it cleaner. Then the water can be reused for washing or Bathing., but the water is clean enough for watering the flower, washing the dog, or even for bathing or swimming.
The advantage of this technology is that it is cheap and good for the environment.,it can help to use less fresh water, and it can help save water
A. If enough homes and businesses use"Living Machines"
B. He is also interested in saving money
C. It cannot be used for drinking or cooking
D. The"Living Machine" is a system for cleaning waste water
E. With the help of sunlight
