问题难在这三道叉中有两道是被堵着的，只能通过镜子看盒子里面的倒影才能看出来。
The trick is that two of the three slits are blocked by obstructions that can only be seen by looking in a mirror that reflects a backward view of what's inside the box.
使用餐具吃饭时，首先从最外侧开始，刀和叉是用来吃第二道菜及以后的菜的。
When eating with silerware, begin from the outside piece, then knife and fork for the second course and so on.
这个裂口又分成三道叉，每一道叉末端形成一个小洞，坚果可以通过小洞拉出来。
The slit branches out into three tracks, each of which ends in a hole through which the nut can be pulled.
这个裂口又分成三道叉，每一道叉末端形成一个小洞，坚果可以通过小洞拉出来。
The slit branches out into three tracks, each of which ends in a hole through which the nut can be pulled.
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