red shift

red-shift的词性：
n.（名词）

1. An increase in the wavelength of radiation emitted by a celestial body as a consequence of the Doppler effect.
红移：天体发出的辐射波长的增加，是多普勒作用的结果

red-shift的词源：

2. [From the fact that the longer wavelengths of light are at the red end of the visible spectrum]
[根据较长波长的光位于可见光谱中红色一端的事实]