string(252) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=cad%E6%96%87%E4%BB%B6%E8%BF%87%E5%A4%A7%E6%80%8E%E4%B9%88%E5%8A%9E%E6%81%A2%E5%A4%8D => Failed to connect to 101.89.159.206 port 38075: Connection refused"
cad文件过大怎么办恢复
