string(320) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%8E%B0%E5%9C%A8%E6%83%B3%E5%81%9A%E4%B8%AA%E5%B0%8F%E7%94%9F%E6%84%8F%E6%8A%95%E8%B5%84%E5%B0%8F%E7%9A%84%E5%81%9A%E4%BB%80%E4%B9%88%E5%A5%BD%E5%91%A2 => Failed to connect to 101.91.112.32 port 38221: Connection refused"
现在想做个小生意投资小的做什么好呢
