string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%91%A8%E7%AC%94%E7%95%85%E8%80%83%E4%BA%86%E5%A4%9A%E5%B0%91%E5%88%86 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
周笔畅考了多少分
