string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%80%81%E8%99%8E%E7%9A%84%E5%AF%BF%E5%91%BD%E5%A4%9A%E4%B9%85%E5%95%8A => Failed to connect to 101.89.117.144 port 38022: Connection refused"
老虎的寿命多久啊
