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Introduction of general topic and some background on it

INTO JAPANESE

一般的なトピックの紹介とその背景

BACK INTO ENGLISH

Introduction and background of general topics

INTO JAPANESE

一般的なトピックの紹介と背景

BACK INTO ENGLISH

General topic introduction and background

INTO JAPANESE

一般的なトピックの紹介と背景

BACK INTO ENGLISH

General topic introduction and background