He used a special apparatus which had a cage for the rat and three doors.
他用了一种特殊装置，这种装置上有个鼠笼和三扇门。
In a typical experiment, a rat was placed in a cage with a light.
在其中一项典型实验中，一只白老鼠被放入有一束光照射的笼子中。
Gingerly he opened the door of the rat 's cage.
他小心翼翼地打开鼠笼的门。
He touched a cage and a large rat, which had been sleeping, stirred.
他捅一捅笼子，里面一只正在睡觉的大白鼠惊醒了。
The rat had to wait different intervals before it was released from the cage.
让老鼠等待的时间间隔也完全区别，然后才把大老鼠从鼠笼中放出赴。
The rat had to wait different intervals before it was released from the cage.
让老鼠等待的时间间隔也完全区别，然后才把大老鼠从鼠笼中放出赴。
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