translation.en: Those are flashes of sound that go out and reflect from surfaces all around me, just like a bat's sonar, and return to me with patterns, with pieces of information, much as light does for you.
translation.zh: 那些都是声音的反射， 从所有我身边事物的表面反射回来， 就像一个蝙蝠的声呐， 反馈给我一些信息， 就像光反馈给你们信息一样。