求翻译：　　2008年夏，一场席卷全境的清洁乡村运动在临安全面铺开。当农村垃圾、污水与河道都被拾掇清爽的时候，人们发现，困扰多年的山核桃蒲污染，成为横亘在清洁乡村运动前面的一个新课题。处理山核桃蒲之所以难，是因为它分布散，且山高路陡，不易收集。是什么意思？

　　In summer 2008, a sweeping throughout the cleaning campaign in Linan fully under way. When the rural River is lay out of garbage, sewage and fresh when people found out that Po Kong pollution, troubled years of Hickory, lie in the cleaning campaign in front of a new subject. Pecan Po was difficult, because of its distribution, and the steep mountain road, it is difficult to collect.