Norman door is a door with a design that makes it difficult to determine the correct way to open the door. 

不知道怎么开门才是正确的，有这样设计的门就称为“诺曼门”。

A so-called "Norman Door" has design elements that give you the wrong usability signals to the point that special signage is needed to clarify how they work. Without signs, a user is left guessing about whether to push or pull, creating needless frustration. 

所谓的“诺曼门”的设计元素给你错误的使用信号，以至于需要特殊的标识让人搞清楚该怎么开关。如果没有标识，使用者就要猜测该推还是拉，导致不必要的挫败。