translation.en: Stewart Brand: Well, the earlier point is we interfered in a big way by making these animals go extinct, and many of them were keystone species, and we changed the whole ecosystem they were in Now, there's the shifting baseline problem, which is, so when these things come back, they might replace some birds that are there that people really know and love.
translation.zh: 史都华·布兰德：嗯，首先 是我们人类先干预自然，造成物种灭绝 许多都是关键物种 让他们灭绝的同时 我们也对生态系统造成冲击 最根本的问题是： 当我们把它们复活时 他们可能会取代现在在那里的鸟类 而这些可能也是人类认识并喜爱的物种