leopard retina

例句：

1. 1. The leopard's retina is a marvel of evolution.
   豹的视网膜是进化的奇迹。
2. 2.Scientists have been studying the structure of the leopard's retina for decades.
   科学家已经研究了豹的视网膜结构几十年了。
3. 3. In order to see in the dark, the leopard's retina contains a special pigment.
   为了在黑暗中看见，豹的视网膜含有一种特殊的色素。