string(278) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%88%9D%E7%BA%A7%E8%BD%BB%E6%9D%BE%E8%BF%87%E5%85%B31%E5%92%8C2%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB => Failed to connect to 101.89.159.206 port 38187: Connection refused"
初级轻松过关1和2有什么区别
