解释词义有两个层次。一是词义是什么,这是知其然。一是为什么是此词义,即词的理据,这是知其所以然。绝大多数的词是见字明义的,也有不少是知道词义而不知理据。理据是词义的根据,是释词的最终要求,是辞书质量的最高水平, Interpretation of meaning has two levels. First, what is the meaning of the word, which is known. First, why is the meaning of the word, that is, the reason of the word, which is why we know it. The vast majority of words are seen in the word meaning, there are many who know the word meaning without knowledge. Rationale is based on the meaning of the word is the ultimate requirement for the interpretation is the highest level of dictionary quality,