string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%8E%B0%E5%9C%A8%E5%87%BA%E5%9B%BD%E7%95%99%E5%AD%A6%E5%80%BC%E4%B8%8D%E5%80%BC => Failed to connect to 14.18.117.71 port 38133: Connection refused"
现在出国留学值不值
