string(241) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%9D%9C%E6%AF%94%E8%A7%86%E7%95%8C%E5%A5%BD%E8%BF%98%E6%98%AFhdr%E5%A5%BD => Failed to connect to 14.18.117.71 port 38093: Connection refused"
杜比视界好还是hdr好
