Rainbows are made when water droplets in the air bend sunlight much like a prism.

像棱镜那样，当空气中的水滴将太阳光折射出来，就形成了彩虹。

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。

In fact, a flat wing that's tilted upwards can also create lift— as long as the air bends around it, contributing to and reinforcing the pressure difference.

事实上， 向上倾斜的扁平机翼也可以产生升力——只要空气在它周围弯曲，有助于并加强压力差。