So, literally, a few minutes before that, I downloaded this scientific paper about calculations on avian defecation, which is really quite interesting, because it turns out you can model this as something called "Poiseuille flow," and you can learn an awful lot about the physics of the avian rectum.
大概在那几分钟之前， 我下载了这篇 关于计算鸟类排便的论文。 这真的很有趣，因为结论是 你可以用泊肃叶流来模拟它， 而且你可以学到很多 关于鸟类直肠的物理知识。