The sky appears blue to us on a clear day, because the atoms of nitrogen and oxygen in the atmosphere separate the suns white light into its many colors, and scatter them throughout the atmosphere.
英
美
释义
晴天,我们看天空是蓝色的,因为大气中氮原子和氧原子将太阳的白光分解成许多种颜色,分散在大气层中。
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