string(241) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=4%E8%89%B2%E8%AE%B0%E5%BF%86%E6%B3%95%E8%AF%A5%E6%80%8E%E4%B9%88%E7%94%A8 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
4色记忆法该怎么用
