But what if there is no bright iron emission line?

可是，如果黑洞不发出明显的发射线怎么办呢？

There was a bright line in the middle, then more bright lines above and below it.

中间有一条亮线， 然后上下有更多亮线。

Well it's got that really bright low line there.

好吧，那里有一条非常明亮的低线。

Most of it is bright orange vertical lines, which represent natural sounds.

大部分是明亮的橙色竖线， 代表自然的声音。

Is that the-so there's a bright line you can draw between-it's people at the lower end of the economic scale?

那是——所以你可以划清界限——是处于经济规模低端的人吗？

That bright line is created by the rays that go straight through the slit, perpendicular to the plate.

这条亮线是由垂直于板的直线穿过狭缝的光线产生的。

But that top third won't cancel with anything – instead, it will reach the screen, creating a bright line.

但前三分之一不会被任何东西取消—— 相反，它会到达屏幕，形成一条亮线。

If light were just a stream of particles, you'd expect to see two bright lines on the screen, behind the two slits.

如果光只是一束粒子流，你会期望在屏幕上看到两条亮线，位于两条狭缝后面。

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

当波相隔一定数量的波长时，波峰和波谷将对齐——产生相长干涉和一条亮线。

But if you have a light source with two wavelengths, then you'll get multiple sets of bright lines, whose color and locations will depend on the wavelength.

但是如果你有一个具有两种波长的光源，那么你会得到多组亮线，它们的颜色和位置将取决于波长。

The bright lines are the result of constructive interference, when light waves build on one another, while the dark spaces in between are the result of destructive interference.

当光波相互叠加时，亮线是相长干涉的结果，而中间的暗线是相消干涉的结果。

By examining sunlight and a sodium flame at the same time, Kirchhoff and Bunsen were able to show that the bright lines emitted by burning sodium fit like puzzle pieces with certain dark lines missing from Fraunhofer's rainbow.

通过同时检查阳光和钠火焰，基尔霍夫和本森能够证明钠燃烧发出的明亮线条就像拼图一样吻合，而弗劳恩霍夫的彩虹中缺少某些黑线。

I think terrorists like Hamas and Hezbollah are evil, and there is a bright line between groups that aim to kill innocents and those that try to avoid doing so at all costs.

我认为哈马斯和真主党等恐怖分子是邪恶的，那些以杀害无辜为目的的团体和那些不惜一切代价避免这样做的团体之间有着一线之隔。

When the path difference between the top and bottom of the slit is equal to 1.5 wavelengths – or 2.5 wavelengths, and so on – there will be a bright line.

当狭缝顶部和底部之间的路径差等于 1。5 个波长或 2。5 个波长，以此类推时，就会出现一条亮线。

Where was the standup person that was willing to call a lie a lie, willing to draw bright lines, and say, I'm not-- I won't even put up with having a conversation about this?

那个愿意称谎言为谎言、愿意划清界线并说“我不是——我什至无法忍受就此进行对话”的正直人在哪里？