即便晴空万里光是空气就会挡住很大范围的光波波段，几乎只允许可见光、以及少数红外光和无线电波通过。

And even just the air in a clear sky blocks a huge range of the wavelengths of lights, pretty much only letting through visible light, anda smattering of infra-red and radio waves.

youdao

即便晴空万里光是空气就会挡住很大范围的光波波段，几乎只允许可见光、以及少数红外光和无线电波通过。

And even just the air in a clear sky blocks a huge range of the wavelengths of lights, pretty much only letting through visible light, anda smattering of infra-red and radio waves.

youdao