string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E7%BA%A7%E7%9B%97%E7%89%88%E6%95%99%E6%9D%90%E6%9C%89%E9%94%99%E8%AF%AF%E5%90%97 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
中级盗版教材有错误吗
