英语语法分析

And redshift depends on just how the universe is expanding.

并且红移取决于宇宙如何膨胀。

Redshift 1 refers to when the universe was half its present age.

当宇宙为目前一半的年龄时的红移值为1。

The object's apparent brightness yields the distance; its redshift yields the velocity.

这些天体的视亮度可以得到距离，它们的红移可以得出速度。