string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A6%82%E4%BD%95%E9%94%BB%E7%82%BC%E5%A2%9E%E5%BC%BA%E4%BD%93%E8%83%BD => Failed to connect to 14.18.117.71 port 38164: Connection refused"
如何锻炼增强体能
