Garbage disposal is a major problem in most cities around the world. 垃圾处理在世界各地的大部分城市里是个大问题. Finding places for garbage is getting more and more difficult. 寻找垃圾处理场越来越困难了. Recycling is, therefore,becoming very popular. 因此资源回收变得很普遍. In other words, more and more people are treating used material so that it can be reused. 换言之,越来越多人在处理使用过的东西以便重新加以利用. There is no doubt that recycling helps save our precious natural resources. 毫无疑问资源回收有助于节省珍贵的自然资源. It is in our own best interest to recycle. 资源回收对我们是最有利的.