string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%89%BE%E6%8A%95%E8%B5%84%E7%9A%84%E9%A1%B9%E7%9B%AE%E4%B9%A6%E6%80%8E%E4%B9%88%E5%86%99 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
找投资的项目书怎么写
