string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%A6%81%E8%B4%A6%E6%96%B9%E6%B3%95%E4%B8%8E%E6%8A%80%E5%B7%A7%E6%9C%89%E5%93%AA%E4%BA%9B%E6%96%B9%E9%9D%A2%E5%91%A2 => Failed to connect to 101.89.117.144 port 38076: Connection refused"
要账方法与技巧有哪些方面呢
