更新1:
http://news.google.com/news?um=1&tab=wn&client=firefox-a&ie=utf-8&oe=utf-8&rls=org.mozilla%3Aen-US%3Aofficial&q=reduce%20cow%20belching
http://news.google.com/news?um=1&tab=wn&client=firefox-a&ie=utf-8&oe=utf-8&rls=org.mozilla%3Aen-US%3Aofficial&q=reduce%20cow%20belching
收錄日期: 2021-05-01 00:06:35
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070711121123AA4STRi