[话题由来] 为了更好地表现文章的中心思想,有的文章往往不是把中心思想和盘托出,而是通过对有关事物的描写,从侧面衬托中心。这样写,不仅使文章内容充实,而且能让读者更加细心地去体会。这种写法是值得同学们学习的。 [The origin of the topic] In order to better express the central idea of ​​the article, some articles are often not centered on the central idea, but through the description of the relevant things, set off from the side of the center. Writing like this not only enriches the content of the article, but also enables the reader to understand it more carefully. This writing is worth studying.