translation.en: If I throw a very concentric circle, or concentric ellipse, it just dutifully makes these evenly spaced lines, which get closer and closer together, which describes how gravity works.
translation.zh: 如果我定一个同心圆， 或者一个同心的弧形， 它只会完成这个任务， 画出这些固定的线条 这些线条靠得越来越近， 并因此告诉人们重力到底是怎样工作的。