string(270) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BC%80%E5%8F%91app%E7%9A%84%E5%85%AC%E5%8F%B8%E6%98%AF%E6%80%8E%E6%A0%B7%E8%B5%9A%E9%92%B1%E7%9A%84 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
开发app的公司是怎样赚钱的
