string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%A7%BB%E5%8A%A8%E5%8A%9E%E5%85%AC%E8%BD%AF%E4%BB%B6%E7%9A%84%E5%A5%BD%E5%A4%84%E6%98%AF%E4%BB%80%E4%B9%88 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
移动办公软件的好处是什么
