The extension of astronomy from visible light to radio waves to x-rays and gammarays never failed to lead to the discovery of unusual objects such as radio galaxies, quasars, and pulsars.
从可见光扩展到无线电波，再到 X 射线和伽马射线，天文学总是会发现不寻常的物体，如射电星系、类星体和脉冲星。
2
We could only get a good look at the structure of the gears after gamma-rays were used to see inside, very similar to the way X-rays are used to see your bones.
我们只有在用伽玛射线观察内部之后才能很好地了解齿轮的结构，这和用 X 射线看你的骨头非常相似。
3
Radiofrequency waves are electromagnetic fields, and unlike ionizing radiation such as X-rays or gammarays, cannot break chemical bonds nor cause ionization in the human body.