string(248) "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 => Failed to connect to 101.91.112.32 port 38221: Connection refused"
团队中领导者的作用
