原句有三处错误：

（1）There is no exaggeration to say 改为 It is no exaggeration to say, 此结构，不定式是真正主语，不是no exaggeration 的定语。

（2）in reflection of 改为 in the reflection of

（3）confucius 是“书名”，除了大写外，还应加引号或用斜体：Confucius

【分析】

1. 前面说了，改为 It is no exaggeration to say 后，不定式是真正主语，It 是形式主语。no exaggeration 作表语。

2. a better understanding of the book called Confucius is desirable in reflection of what is relevant，是 say 的宾语从句。

3. a better understanding of the book （主语）called Confucius （主语的定语）is desirable （系表）in reflection of what is relevant.（介词短语。其中what is relevant 为名词从句）

【翻译】

It is no exaggeration to say a better understanding of the book called Confucius is desirable in the reflection of what is relevant.

毫不夸张地说，更好地理解《孔子》一书，对反映现实相关事物是很有必要的。