string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%8A%A0%E5%BC%BA%E7%B4%A0%E8%B4%A8%E8%83%BD%E5%8A%9B%E6%8F%90%E5%8D%87 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
加强素质能力提升
