string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%84%A6%E5%A2%A8%E4%BA%BA%E7%89%A9%E7%94%BB%E4%B8%8E%E7%BA%BF%E6%8F%8F%E7%94%BB%E7%9A%84%E5%8C%BA%E5%88%AB => Failed to connect to 101.89.117.144 port 38017: Connection refused"
焦墨人物画与线描画的区别
