translation.en: Now how many of you have ever gone to a state park or a national park where you had a big sign at the front saying, "Closed because human sewage is so far over this park that you can't use it"?
translation.zh: 那么有多少人曾经去过州立公园或是国家公园呢？ 在那的门口曾经看到一块大标志上这样写着吗？ “因垃圾太多 充斥公园 而关闭”