The book does not purport to be a complete history of the period.

本书无意标榜为那个时期的全史。

No reference to their existence appears in any literature of the period.

该时期的任何文献中都没有提及他们的存在。

This book deals with the social, economic and political issues of the period.

这本书论及了那个时期的社会、经济和政治问题。

Although not formally trained as an art historian, he is widely respected for his knowledge of the period.

虽然他不是科班出身的艺术史学家，但他对这一时期的知识却普遍为人尊重。

The painting is not representative of his work of the period.

这幅画不是他在那个时期的代表作。