在商场的玩具柜台里有一种叫做“三连环”或“五连环”之类的玩具。这些乍一看似乎根本无法解开的环,如果动动脑子仔细思考一下,就能解开了。由于这种玩具可培养、启发人的智力,所以很受欢迎。要是不从商场买,而自己动手制作一个“智慧之环”玩,就更会平添一份乐 In the mall toy counter there is a called “three-link” or “five-link” and the like. These rings, which at first glance seem like they can not be solved at all, can be unlocked if you think carefully about your mind. Because this kind of toy can cultivate and inspire people’s intelligence, it is very popular. If you do not buy from the mall, but do yourself a “ring of wisdom” to play, it will even add a music