So for example, the scientists would hide a treat of some kind - a toy, or some food - behind a box, while the test subjects looked on.
举个例子，科学家会把一样东西藏进一个箱子，像一个玩具或是一些食物，而让三组实验者在一旁观看隐藏的过程。
All the toys go in the toy box. And the books go back on the shelves.
所有的玩具都放在玩具箱里。书本摆回书架上。
Baerke van der Meij scored almost a million hits on YouTube after his father Jorg posted a film of the toddler shooting three balls into his toy box last week.
Baerkevan dermeij小鬼踢三个足球进玩具箱的视频上周被爸爸上传到Youtube网之后，获得了超百万的点击量。
Baerke van der Meij scored almost a million hits on YouTube after his father Jorg posted a film of the toddler shooting three balls into his toy box last week.
Baerkevan derMeij小盆友踢三个足球进玩具箱的视频上周被爸爸上传到Youtube之后，获得了超百万的点击量。
Baerke van der Meij scored almost a million hits on YouTube after his father Jorg posted a film of the toddler shooting three balls into his toy box last week.
Baerkevan derMeij小盆友踢三个足球进玩具箱的视频上周被爸爸上传到Youtube之后，获得了超百万的点击量。
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