string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%8F%91%E8%86%9C%E5%BA%94%E8%AF%A5%E6%80%8E%E4%B9%88%E4%BD%BF%E7%94%A8 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
发膜应该怎么使用
