string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%8B%97%E7%8B%97%E7%9D%80%E5%87%89%E6%8B%89%E8%82%9A%E5%AD%90%E5%87%A0%E5%A4%A9%E8%83%BD%E5%A5%BD%E5%95%8A => Failed to connect to 61.171.74.35 port 38041: Connection refused"
狗狗着凉拉肚子几天能好啊
