Are either of these Chinese sentences correct?
我不知道很多这本书中的主题。(I don't know a lot of the topics in this book.
我不知道怎么谈很多书中的主题。I don't know how to talk about many of the topics in the book.

Question

Answer

本書中諸多主題我不了解。
I don't know a lot of the topics in this book.

本書中諸多的主題我不知道該如何來講述。
I don't know how to talk about many of the topics in the book.

Answer

1：这本书中的很多主题我都不知道 I don't know a lot of the topics in this book
2：这本书中的很多主题我都不知道怎么去描述I don't know how to talk about many of the topics in the book.