string(330) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B9%B3%E9%85%B8%E8%8F%8C%E5%88%86%E4%B8%BA%E4%B9%B3%E9%85%B8%E6%9D%86%E8%8F%8C%E5%92%8C%E4%B9%B3%E9%85%B8%E9%93%BE%E7%90%83%E8%8F%8C%E5%90%97%E5%AF%B9%E5%90%97 => Failed to connect to 125.88.227.171 port 38062: Connection refused"
乳酸菌分为乳酸杆菌和乳酸链球菌吗对吗
