string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%89%B2%E9%9F%AD%E8%8F%9C%E7%9A%84%E6%A8%A1%E5%BC%8F%E6%9C%89%E4%B8%A4%E7%A7%8D%E5%90%97 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
割韭菜的模式有两种吗
