string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E4%BC%9A%E5%92%8C%E4%B8%AD%E7%BA%A7%E5%86%85%E5%AE%B9%E4%B8%80%E6%A0%B7%E5%90%97 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
注会和中级内容一样吗
