string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%A1%A8%E7%A4%BA%E6%94%B9%E5%8F%98%E8%87%AA%E5%B7%B1%E7%9A%84%E5%8F%A5%E5%AD%90%E7%AE%80%E7%9F%AD => Failed to connect to 14.18.117.71 port 38220: Connection refused"
表示改变自己的句子简短
