layer silicate

例句：

1. 1. The cake was divided into layers of chocolate and vanilla.
   蛋糕被切成巧克力和香草层的。
2. 2. The book is divided into multiple layers of information.
   这本书被分成了多个信息层次。
3. 3. The city is divided into several layers of government.
   这个城市被分成了几个政府层次。