string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%88%B6%E4%BD%9C%E7%BD%91%E9%A1%B5%E6%B5%81%E7%A8%8B%E9%A1%BA%E5%BA%8F%E5%9B%BE%E7%9A%84%E8%BD%AF%E4%BB%B6 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
制作网页流程顺序图的软件
