string(232) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=CAD%E5%A6%82%E4%BD%95%E6%B8%85%E7%90%86%E6%B3%A8%E5%86%8C%E8%A1%A8 => Failed to connect to 14.18.117.71 port 38133: Connection refused"
CAD如何清理注册表
