string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%88%9D%E5%AD%A6%E6%BB%91%E5%86%B0%E8%80%85%E5%BA%94%E8%AF%A5%E6%B3%A8%E6%84%8F%E4%BB%80%E4%B9%88 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
初学滑冰者应该注意什么
