谜语:What has to be broken before it can be used?到底讲的是什么东西?

问题描述:

谜语:What has to be broken before it can be used?到底讲的是什么东西?

egg

存钱罐或者鸡蛋

letter
字母在使用前都要拆开来,然后再组合.
不过对这个答案不确定.