string(257) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E5%AE%89%E5%8C%96%E5%B7%A5%E5%AE%9E%E5%8A%A1%E8%80%83%E8%AF%95%E5%BF%83%E5%BE%97 => Failed to connect to 101.89.120.29 port 38104: Connection refused"
注安化工实务考试心得
