That means that its light will undergo a Doppler shift, and that can be detected.

这意味着它的光会经历多移，并且可以被探测到。

Another way is to measure the Doppler shift in a star's light due to reflexive motion as the planet orbits.

另一种方法是测量恒光线的多移，这种移是由行绕轨道运行时的自反运动引起的。

If we know the planets' mass from the star's Doppler shift, we can use the planet's size to calculate its density.

如果我们通过恒的多移知道行的质量，我们就可以用行的大小来计算它的密度。

The stars Slipher looked at showed unmistakable signs of a Doppler shift.

斯莱弗所观察的恒出明的多移迹象。

The stars Slipher looked at showed unmistakable signs of a Doppler shift, the same mechanism behind that distinctive stretched-out yee-yummm sound cars make as they flash past on a racetrack.

斯莱弗发现，这些恒明确出一种多移的迹象，跟赛车场上飞驰而过的汽车发出的那种连贯而又特有的“嚓——嗖”的声音属于同一机制。

While we may not see that motion directly, if we take spectra of their light, breaking it up into individual narrow colors, we can see the Doppler shift in their spectra.

虽然我们可能无法直接看到这种运动，但如果我们把它们的光谱分解成单独的窄色，我们可以看到在它们光谱中的多移。

Frequency shifting means that we adjust the frequency, and keying means that a 1 is assigned to one frequency, and a 0 to another, just like our traffic light colors.

移意味着我们调整率，键控意味着 1 分配给一个率，0 分配给另一个率， 就像我们的交通灯颜色一样。

Star forming gas clouds emit a very narrow wavelength range of radio waves, and this could be used to measure their Doppler shift, how quickly they were moving toward or away from us.

恒形成气体云发射出波长范围非常窄的无线电波，这可以用来测量它们的多移，即它们向我们移动或远离我们的速度。