string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%82%A1%E7%A5%A8%E7%9A%84%E6%8D%A2%E6%89%8B%E7%8E%87%E9%AB%98%E5%A5%BD%E8%BF%98%E6%98%AF%E4%BD%8E%E5%A5%BD => Failed to connect to 101.89.166.210 port 38089: Connection refused"
股票的换手率高好还是低好
