In the early research of NLP, almost all needed knowledge were collected by linguists, like translation lexicon, all kinds of grammars.
早期自然语言处理的知识几乎都是人工总结的，如机器翻译词典、各种文法等。
参考来源 - 中文统计自然语言处理隐马模型的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The lexicon and the grammar developed for machine translation(MT) are the core of the MT system, and the critical problem in MT research and development.
为机器翻译设计和研制的词典和文法，是机译系统的核心，是机译研究中的关键。
All the basic skills like reading, speaking, writing, listening and translation, must be based on proficient mastery of lexicon.
听说读写译五大技能，都必须以对词汇的充分掌握为基础。
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