在世界环保日来临前夕,联合国教科文组织就如何处理城市垃圾问题向全世界中学生征文.请你根据提示,以Saving our city 为题，写一篇 100词左右的短文，内容如下
城市垃圾的危害
| 污染环境，有害健康
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处理垃圾的方法
| 垃圾分类;报纸、玻璃的再利用; 有害垃圾填埋;废水处理
|
其他措施
| 制定法律，尽我所能，保护环境
|
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