JANE说的道理是类似的,人类也产奶,但是只是产后几个月,牛长期大量产奶,靠的是激素.

来源: danshui 于 2014-05-21 18:41:16 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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