string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E5%AE%89%E5%AE%9E%E5%8A%A1%E7%AD%94%E6%A1%88%E9%9D%A0%E8%BE%B9%E4%BC%9A%E7%BB%99%E5%88%86%E5%90%97 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
注安实务答案靠边会给分吗
