string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%9B%AE%E5%89%8D%E4%B8%AD%E5%9B%BD%E6%9C%89%E5%A4%9A%E5%B0%91%E5%8C%BB%E7%94%9F => Failed to connect to 14.18.117.71 port 38041: Connection refused"
目前中国有多少医生
