冷藏学

例句：

1. 1. The refrigerator is designed to keep food fresh for a long time.
   冰箱的设计是为了长时间保持食物新鲜。
2. 2. Refrigeration is essential for preserving food and preventing spoilage.
   冷藏对于保存食物和防止腐败至关重要。
3. 3.In the past, people relied on natural refrigeration methods to preserve their food.
   在过去，人们依赖自然冷藏方法来保存食物。