In another set of experiments, Kramer put identical food boxes around the cage, with food in only one of the boxes.
在另外一组实验中，克雷默在鸟笼周围放置了完全相同的食盒，这些食盒中只有一个食盒有食物。
2
An animal painter Alexander Pylyschenko who owns a small private zoo in Ukraine set his mind to stay inside the cage with a pregnant lioness Katya for 5 weeks and even help her deliver the cub.
Alexander Pylyschenko是名动物画家，他在乌克兰拥有一个小型私人动物园，他打算搬进笼子，与一头怀孕的母狮Katya同住五周，甚至还将帮她接生。
3
Breathing it, Robert felt as if he was set free from a cage.