string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A5%BD%E4%B9%85%E6%B2%A1%E5%B9%B2%E8%BF%87%E5%86%9C%E6%B4%BB%E4%BA%86 => Failed to connect to 125.88.227.171 port 38062: Connection refused"
好久没干过农活了
