string(367) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%94%BB%E7%82%BC%E4%B8%8D%E4%BB%85%E8%83%BD%E5%B8%AE%E5%8A%A9%E6%88%91%E4%BB%AC%E4%BF%9D%E6%8C%81%E5%81%A5%E5%BA%B7%2C%E8%BF%98%E8%83%BD%E4%BD%BF%E6%88%91%E4%BB%AC%E6%94%BE%E6%9D%BE%E8%8B%B1%E8%AF%AD => Failed to connect to 14.18.117.71 port 38069: Connection refused"
锻炼不仅能帮助我们保持健康,还能使我们放松英语
