string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=3d%E7%94%B5%E5%BD%B1%E6%8B%8D%E6%91%84%E8%AE%BE%E5%A4%87%E6%9C%89%E5%93%AA%E4%BA%9B => Failed to connect to 61.171.74.35 port 38027: Connection refused"
3d电影拍摄设备有哪些
