求翻译：同时对比古今玉部字的不同演变方向及程度，本文从字义引申，字义转移、文字的消亡三方面入手，以具体字例说明，阐述不同词性玉部字的演变。是什么意思？

Contrast ancient and modern jade, the word evolution of the direction and extent, from the word meaning extension, transfer of the meaning of words and text of the demise of three-pronged approach to patients with specific words on the evolution of the different parts of speech jade Ministry word.

Jade, ancient and modern times and compare the different evolution of direction and meaning, derived from this article, letter, word of the demise of 3 begin with specific characters, in order to explain how different word-of-field of evolution.

Simultaneously contrasts the ancient and modern jade department character the different evolution direction and the degree, this article expands from the meaning, the meaning shift, the writing withering away three aspects obtain, explained by the specific character example, elaboration different le

Simultaneous contrast jade character evolution of different direction and extent of ancient and modern, this article from the extension of meaning, meaning transfer, text, the demise of the three-pronged approach, specific cases to demonstrate, explain the evolution of the different parts of speech

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