名词
中文翻译：层
同义词：
['grade', 'stratum', 'layering']
例句：
-
1. The cake is divided into three layers for serving.
蛋糕被分成三层供食用。
-
2. The city has multiple layers of governmental structures.
这个城市有多层政府结构。
-
3. The book is divided into several layers of information.
这本书被分成几个信息层次。