If you've ever seen wavering distortions above a hot road, that fluttery mirage happens because different temperatures and densities of air bend light in different ways, like a fluid lens.

你有曾经在炎热的道路上见过起伏的扭曲，这种闪烁的海市蜃楼之所以会发生是因为不同的温度和密度空气以不同的方式弯曲光线，例如液体镜头。