string(292) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%9B%A2%E9%98%9F%E4%B8%AD%E9%A2%86%E5%AF%BC%E8%80%85%E7%9A%84%E4%BD%9C%E7%94%A8%E4%B8%8D%E5%8C%85%E6%8B%AC%E4%BB%80%E4%B9%88 => Failed to connect to 14.116.215.7 port 38230: Connection refused"
团队中领导者的作用不包括什么
