string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%95%BF%E5%BE%97%E5%83%8F%E5%8C%85%E8%8F%9C%E7%9A%84%E8%94%AC%E8%8F%9C%E4%B8%8D%E8%AE%A4%E8%AF%86 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
长得像包菜的蔬菜不认识
