最上面比较暗的冰层是去年冬天的雪，而中间比较亮的部分形成于去年夏天，最底部比较暗的部分又是更早一年冬天的雪。
The uppermost dimmer layer is snow from last winter, the bright layer in the center is last summer, and the dimmer layer at bottom is the winter before that.
两个庭院将建筑分为三部分，这样在建筑最暗的地方也能得到自然光线和通风。
Two patios cut the volume in three parts, allowing natural lighting and ventilation in the darkest areas of the building.
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