Henles layer

例句：

1. 1.The scientist discovered a new layer of minerals in the earth's crust.
   科学家在地球的地壳中发现了一种新的矿物层。
2. 2. The layers of the cake are rich and creamy.
   蛋糕的层次丰富而奶油状。
3. 3.The layers of the city were designed to provide shelter for the people.
   城市的层次设计是为了为人们提供庇护所。