layer of wooden blocks

例句：

1. 1. The cake is layered with chocolate and nuts.
   蛋糕上撒有巧克力和坚果。
2. 2. The city has several layers of government.
   这个城市有几个层级的政府。
3. 3. The book is divided into three main sections: introduction, body, and conclusion.
   这本书分为三个主要部分：引言、正文和结论。