Sources of Pollution 污染的来源
Waste water and carbon gases from farm animals are bad for the environment.来自家畜的废水和碳气体对环境有害。
Animals wastes and other chemicals flow into the ground and pollute water supplies.动物的排泄物和其他化学物质流入地下，污染了水源。
Exhaust gases from automobiles are a major cause of air pollution and global warming.汽车尾气是造成空气污染和全球变暖的主要原因。
As a result, many companies are trying to produce more efficient and cleaner cars.因此，许多公司都在努力生产更高效、更清洁的汽车。
Pesticides and fertilizers are used by farmers to grow crops such as fruits and vegetables.农民使用杀虫剂和化肥来种植水果和蔬菜等作物。
These chemicals pollute water supplies when they flow into the ground or rivers.这些化学物质流入地面或河流时会污染水源。
Factories like this one allow harmful chemicals to get into the air or water.像这样的工厂允许有害的化学物质进入空气或水中。
Companies need to try harder to protect the environment and our health.企业需要更加努力地保护环境和我们的健康。
Nuclear waste products are radioactive and can pollute the environment for thousands of years.核废料具有放射性，可以污染环境数千年。
They need to be safely transported and stored in a safe place.它们需要安全运输和储存在一个安全的地方。
