Their condition only proves what squalidness may consist with civilization.

他们的处境只是说明其贫困跟文明的发展水平相反相成。

And there are also mirrorless cameras, which are a cross between compact cameras and DSLRs.

并且还有无反相机，它们是小型相机和数码单反相机的结合。

So right now, all you need is the camera and a tripod and, you know, a lens if you have a DSLR.

所以现在，你只需要一台相机、一个三脚架，如果你使用的是单反相机，还需要一个镜头。

Ah, well then I'd recommend a nice entry-level digital SLR.

啊，好的，那我推荐您这款不错的入门级数码单反相机。

The image produced by this new camera is absolutely beautiful, and the new portrait blur emulates the wide aperture optical effect of a professional DSLR camera.

这款新摄像头产生的图像绝对漂亮，新的人像虚化模拟了专业单反相机的大圈学效果。

Called the Lytro Illum, it looks like a serious SLR camera and has a 1,600 price tag.

这款名为Lytro Illum的相机造型和高端专业单反相机类似，定价更是达到1600美元。

They are small like a compact camera but you can also use the same lenses on them that you can use on DSLRs.

它们像小型相机一样小巧，但是你还可以在它们上面使用跟在数码单反相机上使用的一样的镜头。

So camera makers are now moving to the more high-end market, the DSLRs and mirrorless cameras.

所以相机制造商们现在正转向更高端的市场，数码单反相机和无反相机。

And then there are SLRs and DSLRs which are bigger, and you can change the lenses on these cameras and they allow for a lot of manual control.

后还有体积更大的单反相机和数码单反相机，并且你可以更换这些相机的镜头，并且它们允许进行很多手动控制。

And there are also mirrorless cameras, which are a cross between compact cameras and DSLRs. They are small like a compact camera, but you can also use the same lenses on them that you can use on DSLRs.

同样还有无反镜相机，它是袖珍相机和数码单反相机的结合体。它们像袖珍相机一样小巧，但是你同样可以在它们上面使用数码单反相机所使用的镜头。

If there's no distortion in space-time and the lengths are exactly the same, which we calibrate them to be, then when it comes back, if we just invert one signal compared to the other, they'll just cancel.

如果没有时空扭曲， 且长度完全相同（我们将其校准为相同），那么当信号返回时，如果我们只是将一个信号与另一个信号反相，它们就会相互抵消。

And now, with, you know, the phones that we have in our cameras, like they're so you know, they can rival, you know, the the quality of an SLR for some of them.

而现在， 我们手机里的相机， 你知道的，它们已经非常出色，有些甚至能媲美单反相机的画质。

However, if we loop an inverter back in on itself, depending on the physical design of the inverter, the output will continuously flip between 1 and 0, a few picoseconds per cycle.

而， 如果我们让反相器自身形成一个环路，根据反相器的物理设计，输出将会在1和0之间持续翻转，每个周期几皮秒。

Some type of drone, some type of unmanned aerial system and It is simply that that light source resolves itself through the night vision goggles onto the SLR camera as a triangle.

某种无人机，某种无人驾驶飞行系统，而那个源通过夜视护目镜在单反相机上呈现为一个三角形。

I'm not going to head in there with the big DSLR camera just because that's a bit aggressive when you're seeing a place that you actually might be renting.

我不会拿着大号单反相机进去，因为当你看中一个可能要租的地方时，这样做有点过于高调了。

The key, when you have light just of one frequency like this, is to understand where the waves are in and out of phase with each other.

当你有单一频率的时，关键是要理解这些波何时同相或反相。

So I got the DSLR to actually make videos, and my husband and I had moved up to the Catskills around that time.

- 所以我让数码单反相机真正制作视频，而我丈夫和我大约在那个时候搬到了卡茨基尔。

Now, to put this into perspective, I use a professional DSLR camera now, a real photography camera, to film my YouTube videos.

现在来说说这个， 我现在用的是专业的单反相机，真正的摄影相机， 来拍摄我的YouTube视频。

By contrast, if the waves are exactly out of phase, one rising as the other falls, the interference will be destructive.

相反， 如果波完全反相，一个上升而另一个下降， 干涉将是破坏性的。

A curious friendship theirs must have been: a pointed illustration, indeed, of the old adage that " extremes meet" .

他们的友谊必定十奇特，的确是对“相反相成”这句谚语的鲜明写照。