vignette

1. N-COUNT A vignette is a short description, picture, or piece of acting that expresses very clearly and neatly the typical characteristics of the thing that it represents. (清晰介绍事物特征的)简介[正式] [oft N 'of' n]

The book is an excellent vignette of some of the major debates in science. 这本书非常清晰且扼要地介绍了科学界的一些主要争议。