So, for every valley there is a peak, and for every peak, a valley.

对应原声波的波谷，新声波会有个波峰，而对应其波峰，新声波会有个波谷。

See, sound waves, like light waves, have peaks and valleys.

声波跟光波，有波峰和波谷。

They have a trough and a crest, and consist not of moving water, but the movement of energy through water.

它们有波谷和波峰，并不是流动的水，而是水的能量运动。

When one wave's peak met another's trough, though, the light's intensity would fall.

然而，当个波的波峰遇到另个波的波谷时，光的强就会下降。

That is to say, the crests of one set of waves may coincide with the troughs of the other set.

也就是说，组波的波峰可能与另组波的波谷重合。

But waves interfere DEstructively when one wave's crest run into the other wave's trough, and vice versa.

但是当个波的波峰碰到另波的波谷时，波会破坏性地，之亦然。

So the wave is basically a peak that moves from being a crest to a trough and vice versa

所以波浪是个峰，它从存在改变 顶点到波谷，之亦然。

Waves interfere constructively when the crests of both waves end up in the same spot, and so do their troughs.

当两个波的波峰最终在同个位置时，波会产生建设性的，它们的波谷也是如此。

Change it enough, and you'll reach a point where the crests match the valleys, making the waves cancel each other out — that's destructive interference.

改变得够多，就会达到某个点，让波峰对上波谷，让波彼此抵消——那就是相消（破坏性）涉。

These pressure variations can be modeled by a sine wave, where the peaks represent increased pressure and the troughs represent decreased pressure.

这些压力变化可以通过正弦波建模，其中波峰代表压力增加而波谷代表压力降低。

Sometimes the peaks line up to produce a louder sound, and when a peak lines up with a trough, they cancel out.

有时波峰排列在起会产生更大的声音，而当波峰与波谷排列在起时，它们就会抵消。

If the peak of one ripple hits the valley of a  second ripple, they will subtract each other, producing a flat surface.

如果个波纹的波峰碰到第二个波纹的波谷，它们会相互抵消，产生个平坦的表面。

Crest to trough a single such wave could take more than a decade to pass through our solar system, despite moving at the speed of light.

从波峰到波谷——尽管以光速来移动，单个引力波要用十多年才能穿过我们的太阳系。

So the crests of different light waves combine, and so do the troughs, forming one wave with a higher amplitude.

所以不同光波的波峰结合，波谷也结合，形成个振幅更高的波。

The light that the cascade produced is of the same wavelength, with the peaks and troughs of the light waves fluctuating in unison.

级联产生的光具有相同的波长，光波的波峰和波谷致波动。

However, phase shifting would be seen as breaking up the waves' locations of the peaks and the troughs within a set of wavelengths.

然而，相移会被视为破坏组波长内的波峰和波谷的位置。

We can look at the spacing between the ripple crests as well as the amplitude or the height from the crest to the trough.

我们可以观察波峰之间的间距以及波峰到波谷的幅或高。

And when a wave is out of phase by 180 degrees, it's destructive, with the crests and troughs cancelling each other out.

当波相位相差 180 时，它具有破坏性，波峰和波谷相互抵消。

However, you can certainly identify and measure specific characteristics of a wave pattern as a whole, most notably, its wavelength, which is the distance between two consecutive crests or troughs.

然而，你当然可以识别和测量个波型的特定特征作为个整体，最显著的是它的波长，它是两个连续波峰或波谷之间的距离。

When the waves are an exact number of wavelengths apart, the crests and troughs will line up – creating constructive interference and a bright line.

当波相隔定数量的波长时，波峰和波谷将对齐——产生相长涉和条亮线。