string(239) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%B5%E8%AF%9D%E5%AE%A2%E6%9C%8D%E7%9A%84%E8%AF%9D%E6%9C%AF%E7%9A%84%E6%A0%BC%E5%BC%8F => Received HTTP code 403 from proxy after CONNECT"
电话客服的话术的格式
