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As is encouraged to protecting the environment,Waste sorting is very necessary.It can save the money and the time for a country to deal with rubbish and it also can enhance the quality of people.Concerning the benefits of waste sorting,China has done something really wisely.Now we can see all kinds of rubbish bin in the street,in the park,in the community and so on.And waste sorting is now deeply rooted in people's mind.I'm really appreciate that.
思路：可以从进行垃圾分类收集可以减少垃圾处理量和处理设备，降低处理成本，减少土地资源的消耗，具有社会、经济、生态等几方面的效益开始写。多用对话描写。
正文：
垃圾，在我们生活中随处可见，可是，如果不把垃圾好好的清理，那么，蓝天白云也就是一个遥不可及的梦想。就在今年暑假，我真正的了解到了清理垃圾和垃圾分类的重要性。
暑假里的一天，我到乡下的奶奶家去避暑。走在一条乡间的回家小路上，我发觉这路变得平坦了，不再坑坑洼洼了e799bee5baa6e78988e69d83338，路旁那些脏兮兮的东西竟也神奇的消失了，不像以前那般的泥泞和脏乱了，最引人注目的要数路旁那两只颜色鲜艳，一蓝一红的大垃圾桶！
每隔一段路就并排站立着，好像保家卫国的战士！这是怎么回事呢？难道路重新修过了吗？还是现在G20的召开，连农村也发生了变化？一路上我百思不得其解！“奶奶，现在村里的路怎么焕然一新了啊？”刚到家门口我就迫不急待地向奶奶喊着！
“呦！宝贝来了啊”奶奶一听到我的声音就马上迎上来。“真不愧是读书人，这么快就发现了村里现在的不同！”“对啊对啊！今天我一路走来，，发现村里的小路变得可干净整洁了！还有路旁那么多垃圾桶，这究竟是怎么一回事。”我亲昵的拉着奶奶的手，不停地追问着！“我的孙女可聪明了，你自己想想！”奶奶反握我的手，故作神秘地说道。
我挠着脑袋，眼睛咕噜一转，“难道是因为路旁的垃圾桶带来的变化？”“真棒！”奶奶一边向我竖起大拇指，一边笑眯眯地说道：“上个月村里派了好些人来，把大伙儿聚在一起，让我们学习关于垃圾分类的知识，教我们日常用品该如何分类，他们还说，城里分成了可回收垃圾和不可回收垃圾，我们就把垃圾分类的更加精确，就像厨房垃圾，还有……”
奶奶津津有味地说道，“原来我们哪懂什么垃圾分类啊，加上又不识字，现在好了，有了几只颜色各异的垃圾桶，我们知道了该怎么放垃圾，不像以前那般乱扔垃圾，不光我们的小路和其他地方，干净多了！而且空气也更加清新自然了…，”听了奶奶的话，我恍然大悟，原来这一切都是合理处理垃圾带来的功效！
回到家中，我仔细思考起来，如果将垃圾分类多样化，那就有助于环境的提升！现在，我们一般只采用可回收垃圾与不可回收垃圾的分类，有时候甚至直接把垃圾一股囊的扔进了垃圾箱，这样，我们的环境只会变得越来越糟糕。
Factually waste separation is vital to create an environment-friendly campus. Firstly, waste separation does great contribution to the environmental protection. Since some of waste is recyclable, while other is unrecyclable, if all the students could voluntarily differentiate recyclable rubbish from unrecyclable rubbish, the risk of the environmental pollution will be greatly reduced. Secondly, waste separation could save a lot of energy and time on its processing.
With the rapid increase in the amount of rubbish at the campus, rubbish classification does not permit of any delay. On the one hand, as the well- educated people, college students should act as hosts of the universities and separate waste from this moment in their daily life. On the other hand, university authorities should strengthen students’e68a84e79fa5e98193337 awareness of environmental protection and suide students to separate waste in a reasonable way.