string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E8%B4%AD%E4%B9%B0%E4%B9%A6%E5%9C%A8%E5%93%AA%E9%87%8C%E4%B9%B0%E6%AD%A3%E7%89%88%E5%A5%BD => Failed to connect to 61.171.74.35 port 38041: Connection refused"
网购买书在哪里买正版好
