string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%84%9F%E8%A7%89%E4%B8%8A%E5%AD%A6%E6%B2%A1%E6%9C%89%E8%87%AA%E7%94%B1%E4%BA%86%E6%80%8E%E4%B9%88%E5%8A%9E => Failed to connect to 14.18.117.71 port 38041: Connection refused"
感觉上学没有自由了怎么办
