string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%80%E4%B9%88%E5%8F%AB%E5%81%9A%E5%BB%B6%E7%BB%AD%E6%80%A7%E6%8A%A4%E7%90%86 => Failed to connect to 14.18.117.71 port 38093: Connection refused"
什么叫做延续性护理
