Natural Overview: Fengnan District of Tangshan City in Hebei Province is located in the eastern part of the Tangshan Bay "with 4.1" an important part.
自然概况：唐山市丰南区地处河北省东部，是唐山湾“四点一带”的重要组成部分。
This chapter mainly introduced overview of the natural environment, social environment and the people's spiritual environment.
本章主要介绍了瓦屋村的自然环境、社会环境、精神环境方面的概况。
Based on the latest research results in recent years, this article provides an overview on classification, physiological and pharmacological actions of natural polyphenol pigments.
本文将近年酚类色素种类及其生理与药理作用的研究进展作一综述。
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