string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%95%99%E5%B8%88%E4%B8%80%E5%AF%B9%E4%B8%80%E5%B8%AE%E6%89%B6%E8%BF%87%E7%A8%8B%E8%AE%B0%E5%BD%95 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
教师一对一帮扶过程记录
