物体的电磁辐射由于某种原因，光谱线向波长较长的一端位移的现象【天】red shift

• 根据红移现象，天文学家认为宇宙边缘天体的退行速度能达到光速的0.6倍甚至更大。

  Based on red shift, astronomers believe that the recessional velocity of astronomical bodies at the fringes of the universe can reach 0.6 times the speed of light or even greater.

• 照片的清晰度有限，边缘还有红移。

  The clarity of the photograph is limited, and there is red shift at the edges.