wants agreement on general principles, which could be applied to many types of products and perhaps extended to other countries.

则希望就普遍的原则取得一致，而这些原则适用于许多不同产品，同时可能延伸到其它国家。

It has to be tall because it is like a giant block and tackle,

井架必须很高，因为它像一个巨型滑轮组。

This result merely confirms earlier American and British studies:

结果仅仅确认了美国人和英国人早期的研究：

it cannot judge distances, depths.

不会判断距离和深度。

Before very long the parents will be complaining that the child is so secretive and never tells them anything,

不要很久，家长就会抱怨孩子守口如瓶，什么事也不告诉他们，

no crowd or movement in which he may take comfort,

找不到伙伴和活动使自己得到安逸。