例句與造句

1. This axis defines a direction of space that somehow determines how light travels through the universe.
2. He tries to see how light travels through space and hits an object : some rays are absorbed and others reflected.
3. This axis of orientation is not a physicial entity, but rather defines a direction of space that somehow determines how light travels through the universe.
4. It's difficult to find how light travels in a sentence. 用how light travels造句挺難的