The author first introduces the definition and classification of lexical chunks.
作者首先介绍了词汇组块的定义及其分类。
2
The answer to question 1 involves the definition of the lexical difficulty, which reflects the researcher's viewpoint or stand of linguistics and philosophy.
对问题1的回答涉及对词汇难度的定义，而对这一问题的定义又反映了研究者的哲学和语言学立场。
3
The nominal definition is a important part to the explanation of the word and phrase which is studied not only by lexical semantic and lexicography but also by logic.