这是一本非常简单的非小说类书籍，专为孩子们准备的翻翻书。书中有小孔可以窥视，小折页可以看到真实的信息—当夜幕降临时会发生了什么？

A very simple non-fiction, lift-the-flap book for small children, packed with holes to peep through, flaps to peep beneath and snippets of factual information about what happens when night falls.