Waste water and carbon gases from farm animals are bad for the environment. Animals wastes and other chemicals flow into the ground and pollute water supplies.
农场牲畜产出的废水和含碳气体对环境有害。牲畜粪便和其他化学物质流入地下，污染水源。
Exhaust gases from automobiles are a major cause of air pollution and global warming. As a result, many companies are trying to produce more efficient and cleaner cars.
汽车尾气是造成空气污染和全球变暖的主要因素。最终很多企业开始尝试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. These chemicals pollute water supplies when they flow into the ground or rivers.
农民使用杀虫剂和化肥来种植农作物，比如水果和蔬菜。当这些化学物质流入地下或河流时，水源就会受到污染。
Factories like this one allow harmful chemicals to get into the air or water. Companies need to try harder to protect the environment and our health.
像这样的工厂也会让一些有害化学物质进入空气或水域。企业需要更加努力以保护我们的环境和健康。
Nuclear waste products are radioactive and can pollute the environment for thousands of years. They need to be safely transported and stored in a safe place.
核废料具有放射性，可以污染环境长达数千年。它们需要安全运输并存放在安全的地方。
