So you have radio waves and microwaves and X-rays and gamma rays passing through your body right now and you're completely unaware of it, because you don't come with the proper biological receptors for picking it up.
如果无线电波、微波 还有X射线和伽玛射线正穿过你的身体， 你是完全意识不到它们的存在的。 因为人类没有进化出 可以感知这些波的 生物感受器。