string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E5%9B%BD%E6%9C%80%E6%96%B0%E6%8A%97%E8%82%BF%E7%98%A4%E6%96%B0%E8%8D%AF%E8%B4%B9%E7%94%A8 => Failed to connect to 14.116.215.7 port 38225: Connection refused"
中国最新抗肿瘤新药费用
