string(221) "get document error:https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%A2%86%E5%AF%BC%E8%AE%A9%E7%BB%99%E4%BB%96%E6%8F%90%E5%BB%BA%E8%AE%AE => Received HTTP code 403 from proxy after CONNECT" 领导让给他提建议

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