目标群体的定义网!
string(229) "get document error:https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%9B%AE%E6%A0%87%E7%BE%A4%E4%BD%93%E7%9A%84%E5%AE%9A%E4%B9%89 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
目标群体的定义网!