| 摘要 |
An electronic dictionary has a keyboard for entering words, which words are displayed along with a set of synonyms divided into subsets, each subset having a displayed common core meaning. The original word entered by the user for which synonyms and related words are sought is put into a history list. The user can select any of the synonyms or any of the words from the core meaning presented, or can independently enter any desired word and add those entered words to the history list. In this fashion, the user can build up a history list which can be reviewed by the user and any word in the history list re-accessed, so that the user can track through the history list and explore any desired complex arrangement of concepts, ideas, and relationships. As the history list becomes full, the earliest additional entry words are deleted in sequence.
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