string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%9D%92%E5%B9%B4%E5%BF%97%E5%AD%98%E9%AB%98%E8%BF%9C%E7%9A%84%E4%BE%8B%E5%AD%90%E7%AE%80%E7%9F%AD%E4%B8%80%E7%82%B9 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
青年志存高远的例子简短一点
