string(262) "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%E5%BB%BA%E7%AD%91%E5%AE%9E%E5%8A%A1%E5%AD%A6%E9%9C%B8%E7%AC%94%E8%AE%B0 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
2021二建建筑实务学霸笔记
