string(242) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=qq%E9%A3%9E%E8%BD%A6%E8%BD%A6%E9%98%9F%E8%81%8C%E4%BD%8D%E5%90%8D%E7%A7%B0 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
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