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。
Venus isn't even that interesting to look at: a boring cue ball for backyard astronomers, its clouds reflects 75% of visible light.
他们在天空中看到的光可能是来自地面反射到云层上的光。
The light they saw in the sky might have been light from the ground, reflected on to the clouds.
它是一片变大的低厚云层，这种云层将少量的太阳能反射回太空，为地球降温。
It is an increased area of low thick clouds, the type that reflects a rare portion of solar energy back to space and cools the Earth.
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