That book has a preface, not a foreword.

那本书有序文, 没有前言。

He gave a rather disjointed account of his experience in the jungle.

"在在热带丛林里的经历时,的话前言不对后语。"

The preface is complete in itself.

这前言本身就是完整的。

The introduction is mainly about the definition of eponym, and emphasizing its development and synchrony with language.

前言要是名祖名词的定义，阐述名祖名词的发展和存在现状，并强调了名祖名词语言的发展共时。