1·Venus isn't even that interesting to look at: a boring cue ball for backyard astronomers, its clouds reflects 75% of visible light.
金星看起来甚至也没有那么有趣：对后院的天文爱好者来说，它是一个无聊的主球，它的云层反射了75%的可见光。
2·Visible light consists of different colors or wavelengths, which together make up what's called spectrum, a band of colors, like you see in a rainbow.
可见光由不同的颜色或波长组成，它们共同组成了所谓的光谱（一段颜色），就像你在彩虹中看到的那样。
3·A sodium chloride crystal is transparent to visible light.
氯化钠晶体对可见光是透明。
4·Optical radiation is just visible light energy spreading out.
光辐射就只是扩散的可见光能量。
5·Radio telescopes create pictures of the sky, not in visible light, but in radio waves.
射电望远镜拍摄的天空图片不是可见光，而是无线电波。