当太阳西沉时，整个天空布满了一片红色晚霞。
As the sun went down, the whole sky became suffused with a red glow.当太阳落山的时候，天空呈现一片红色的霞光。
Central filamentsof the dusty clouds glow with a faint reddish photoluminesence as some dust grains effectively convert the star's invisible ultraviolet radiation to visible red light.在尘埃云中心的细丝发出微弱的红色荧光，这是由于一些尘埃微粒能有效地将恒星发出的不可见紫外线转换成可见的红光。
