string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%9C%A8%E5%AE%BF%E8%88%8D%E6%8C%A3%E9%92%B1%E7%9A%84%E6%96%B9%E6%B3%95 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
在宿舍挣钱的方法
