N a shift in the lines of the spectrum of an astronomical object towards a longer wavelength (the red end of an optical spectrum), relative to the wavelength of these lines in the terrestrial spectrum, usually as a result of the Doppler effect caused by the recession of the object 红移 (Compare blueshift)
Quasars are objects that appear stellar or almost stellar, but their enormous redshifts identify them as objects at very large distances.
类星体是物体出现恒星或几乎恒星，但其巨大的红移确定物体他们非常大的距离。
We summarize the observational and theoretical studies of quasars, and present the results of our studies on the Doppler redshifts of quasars.
本文综述类星体的观测和理论研究现状，详细介绍本人在攻读博士学位期间在类星体多谱勒红移方面的研究工作。
Then, with a few assumptions about the curvature and contents of the universe, they can reconstruct the positions of those objects from redshifts.
然后，通过一些关于宇宙曲率和内容的假设，科学家们能够重建这些物体的位置。
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