translation.en: For instance, we know, independently of seasons, that surfaces tilted away from radiant heat are heated less, and that a spinning sphere, in space, points in a constant direction.
translation.zh: 比如说，我们不用明白季节就知道 背向发光物体的表面 受热的程度较小 空间中自转的这个球体 指向同一个方向