实验参与者手中有两个按钮：按下其中一个按钮会让蛇离得近些，而按下另一个按钮会让蛇离得远些。

All they had were two buttons. Pressing one would roll the snake closer.

youdao

实验参与者手中有两个按钮：按下其中一个按钮会让蛇离得近些，而按下另一个按钮会让蛇离得远些。

All they had were two buttons. Pressing one would roll the snake closer.

youdao