The first one is to study polysemy and usage is not easy. The second is to study preposition should think of complex relationship of many sides.
第五部分是余论：一是多个的词义和用法的研究还不容易，二是借词的研究还要考虑到多方面复杂的关系。
The first one is to study polysemy and usage is not easy. The second is to study preposition should think of complex relationship of many sides.
第五部分是余论：一是多个的词义和用法的研究还不容易，二是借词的研究还要考虑到多方面复杂的关系。
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