string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%82%A1%E5%B8%82%E9%87%8C%E6%8D%A2%E6%89%8B%E7%8E%87%E9%AB%98%E5%A5%BD%E4%B8%8D%E5%A5%BD => Failed to connect to 101.89.117.144 port 38056: Connection refused"
股市里换手率高好不好
