string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%BF%98%E5%8F%AF%E4%BB%A5%E9%94%BB%E7%82%BC%E8%BA%AB%E4%BD%93%E7%9A%84%E8%8B%B1%E6%96%87 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
还可以锻炼身体的英文
