Ladies and gentlemen, thank you for coming to today's talk about environmental changes. I cannot stress enough how important it is to protect our environment! In the last few years air pollution has risen drastically and as a result of this our bird population has declined dramatically. But not only our air has been polluted- also our beautiful rivers and streams. Due to the high water contamination, the number of fish has plummeted to its lowest point in over 20 years. I hope you will stop directing your sewage into our rivers, and use recycling containers instead. I also appeal to your common sense: when you go to the supermarket, take a cotton bag with you to avoid taking home so many plastic bags. When you dispose of them they fly around and kill a lot of birds. Eventually they end up in rivers and finish off their job there by killing the few fish we have left. I therefore ask you to help us to keep our environment clean, it is our future and we need to protect it!
sewage ['suːɪdʒ] n. 污水；下水道；污物