acquiring lexical relation的用法和样例：
- The study of lexical relations has a long history in semantics and lexicology.
- It fails to explain the high degree of regularity of the lexical system as well as how children come to acquire lexical information.
- Experiments show that it can acquire lexical items with high frequency effectively and efficiently without the support of the dictionary and the supervised learning in term of corpus.
- The focus of this thesis involves the prototypical effects in lexical relations and their cognitive motivation.Lexical relations include: homonymy, polysemy, synonymy, antonymy, hyponymy and so on.