string(360) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BE%88%E5%83%8F%E7%94%9F%E8%8F%9C%E7%9A%84%E4%B8%80%E7%A7%8D%E8%8F%9C%2C%E5%90%83%E8%B5%B7%E6%9D%A5%E5%8F%A3%E6%84%9F%E6%9C%89%E7%82%B9%E5%83%8F%E8%8A%A5%E6%9C%AB%E7%9A%84%E5%91%B3%E9%81%93 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
很像生菜的一种菜,吃起来口感有点像芥末的味道
