string(243) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2023%E4%B8%80%E9%80%A0%E8%AE%A1%E4%BB%B7%E6%95%99%E6%9D%90%E6%94%B9%E5%8A%A8 => Failed to connect to 101.91.112.32 port 38195: Connection refused"
2023一造计价教材改动
