string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%B5%E8%AF%9D%E8%90%A5%E9%94%80%E5%B1%9E%E4%BA%8E%E7%BA%BF%E4%B8%8A%E8%90%A5%E9%94%80%E5%90%97 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
电话营销属于线上营销吗
