string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%89%B9%E5%88%AB%E5%83%8F%E7%94%9F%E8%8F%9C%E7%9A%84%E8%8F%9C%E6%98%AF%E4%BB%80%E4%B9%88%E8%8F%9C => Failed to connect to 14.18.117.71 port 38069: Connection refused"
特别像生菜的菜是什么菜
