string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B7%98%E6%B0%94%E5%80%BC%E8%B6%8A%E5%A4%9A%E8%B6%8A%E5%A5%BD%E5%90%97 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
淘气值越多越好吗
