string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E6%95%99%E6%9D%902022%E5%92%8C2023%E6%9C%89%E5%8C%BA%E5%88%AB%E5%90%97 => Failed to connect to 101.91.112.32 port 38221: Connection refused"
一建教材2022和2023有区别吗
