string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%A7%86%E9%A2%91%E8%A6%81%E5%89%AA%E7%9F%AD%E5%BA%94%E8%AF%A5%E7%94%A8%E5%93%AA%E4%B8%AA%E5%8A%9F%E8%83%BD => Failed to connect to 14.18.117.71 port 38133: Connection refused"
视频要剪短应该用哪个功能
