string(280) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2023%E5%B9%B4%E4%B8%80%E5%BB%BA%E5%AE%98%E6%96%B9%E6%95%99%E6%9D%90%E5%93%88%E5%B0%94%E6%BB%A8%E5%87%BA%E7%89%88 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
2023年一建官方教材哈尔滨出版
