After the accident, the car's roof was crushed as flat as a pancake.

pancake 是名词，由 pan（平底锅）和 cake（蛋糕）组成，字面意思是"平底锅烤的蛋糕"，指"煎饼"这种薄而扁平的圆形面食。 这里用 pancake 来比喻车顶被压得非常扁平的状态，因为煎饼的特点是又薄又平。