The sky a ears blue to us on a clear day, because the atoms of nitrogen and oxygen in the atmo here separate the su white light into its many colors, and scatter them throughout the atmo here.

晴天，我们看天空是蓝色的，因为大气中氮原子和氧原子将mbsky 蓝色天空太阳的白光分解成许多种颜色，分散在大气层中。