望远镜两端的曲面玻璃镜头起到了三棱镜的作用。
The curved glass lenses at each end of the telescope acted like prisms.
这款机器人的语言能力已经到达当听到词语“彩虹”就回复“当阳光穿透空气中的雨滴，它们就能起到棱镜的作用反射光线从而形成彩虹。”
The robot's language skills are already such that upon hearing the word "rainbow", it replies: "When the sunlight strikes raindrops in the air, they act like a prism and form a rainbow.
这种相当常见的气象景象之所以会出现，是因为覆盖广大天空的高层薄云中含有数以百万计的小冰晶，而每一个冰晶的作用就像是小型的棱镜。
This fairly common sight occurs when high thin clouds containing millions of tiny ice crystals cover much of the sky. Each ice crystal ACTS like a miniature lens.
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