string(249) "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%E8%A7%92%E8%89%B2 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
团队中领导者的角色
