string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BE%8E%E5%9B%A2%E4%BC%97%E5%8C%85%E8%B7%9F%E8%9C%82%E9%B8%9F%E4%BC%97%E5%8C%85%E7%9A%84%E5%8C%BA%E5%88%AB => Failed to connect to 101.89.159.206 port 38100: Connection refused"
美团众包跟蜂鸟众包的区别
