string(244) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E4%BA%8C%E5%BB%BA%E8%8B%8F%E5%A9%B7%E5%A4%87%E8%80%83%E6%8C%87%E5%AF%BC => Failed to connect to 125.88.227.171 port 38062: Connection refused"
2021二建苏婷备考指导
