string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E7%BA%A7%E5%BB%BA%E9%80%A0%E5%B8%88%E7%AC%94%E8%AE%B0%E6%80%8E%E4%B9%88%E5%81%9A => Failed to connect to 101.89.159.206 port 38100: Connection refused"
二级建造师笔记怎么做
