string(275) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%BB%91%E5%86%B0%E6%96%B0%E6%89%8B%E6%95%99%E5%AD%A6%E6%96%B9%E6%B3%95%E6%9C%89%E5%93%AA%E4%BA%9B%E5%91%A2 => Failed to connect to 101.91.112.32 port 38221: Connection refused"
滑冰新手教学方法有哪些呢
