string(264) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8B%8D%E7%9A%84%E8%A7%86%E9%A2%91%E6%80%8E%E6%A0%B7%E5%89%AA%E6%8E%89%E4%B8%80%E9%83%A8%E5%88%86 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
拍的视频怎样剪掉一部分
