Fayman, and Dr. Yaro borrowed, an idea from ornithology, If you want to be able to find out in the future, whether you have seen a particular bird before one way is to market with a ring.
Fayman,和 Yaro 博士借用
鸟类学的
个想法,如果你想成为能够在未来找出,之前你是否见过某种特定的鸟,
种方法是带着戒指去市场。