string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%A5%A8%E6%88%BF%E7%9A%84%E5%8D%95%E4%BD%8D%E6%98%AF%E4%BB%80%E4%B9%88 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
票房的单位是什么
