He also described celestial phenomena such as haloes—that is, bright circles of light around the sun, the moon and bright stars—and comets.

他也描述了天体现象，比如说晕——那是太阳、月亮和明星周围的——还有彗星。

He has just learned what aperture is, but he still fails to use it.

他刚刚学会了什么是，但他仍然不会用。

The nearer galaxy appears to have a circle of light, or a halo, around it.

较近的星系周围似乎有一个或晕。

You can see it light up these gray aperture blades.

你们可以看到它照亮了 这些灰色的叶片。

Beams of light or circles of light are emitted from these devices and the reflected time of flight of light lets them know where my feet are on the floor.

这些装置发出的束或，并且的反射时间能反映出我的脚在地板上的位置。

We capture light from all of those objects into our aperture, and that light is then focused at the focal plane, where our instruments sit and process that light.

我们把所有这些观测对象的都捕捉到，让这些聚在上，我们的仪器就在那处理这些。

They're called light cycles, and they have these hollow wheels, and I remember thinking, well, I'm not an engineer but couldn't we do something useful with that empty space?

它们被称为，有中空的轮子，我记得我在想，我虽然不是工程师，但我们不能利用那个架空层来做些有用的东西吗？

Similarly, the ring around earth during a total lunar eclipse is red because the sunlight travels through a long stretch of earth's atmosphere, from one end of the planet to the other.

同样地，地球附近的在月全食的时候是红色的，因为太阳穿过了地球的一长段大气层即从地球的一边到另一边。

In order to rescue Jacob's friends, Bentham suggests that they use the Panloopticon, a machine that contains unique doors to time loops across the world, one of which is to a door inside the wights' fortress.

为了营救雅各布的朋友，本瑟姆建议他们使用 Panloopticon，这是一台包含通往世界各地时的独特门的机器，其中之一是通往幽灵堡垒内的一扇门。

That's when the aperture of a camera's lens is wide open, creating a shallow depth of field.

那是相机镜头的完全打开，创造出浅景深的时候。

When we take a picture, light after reflecting from an object enters the camera and passes through following: Firstly, it passes a transparent glass in front of the aperture of the camera.

当我们拍照时，从物体反射回来的线进入相机，并通过：首先，它通过相机前的透明玻璃。

You might know it as in Northern lights, but it's technically called the Aurora Borealis in the Northern hemisphere, in the Aurora Australia's or Southern lights in the Southern hemisphere.

或许你觉得它的名字是“Northern lights”，但它的专业名称是“Aurora Borealis”，它发生在北半球、澳大利亚极，南半球也会出现南极。

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学效果。

Candour is a trend, with customers asking for large Xs to place over divorced spouses, or tiny halos to place over a family member who has died.

坦率是一种趋势，顾客会购买大型 X 符号来代表离婚夫妻，或者小小的来代表去世的家人。

When you press the shutter button, the shutter opens, allowing the light to stream through the aperture of the camera's lens to the camera's eye.

当你按下快门按钮时，快门打开，让线通过相机镜头的进入相机眼。

And then when you're below 100 lux, then it's going to use the F 1.5 aperture to give you a much brighter image.

如果源低于100勒克斯，它会选择F 1.5，助你拍出最佳相片。

She sat down on the steps in the circle of faint light thrown by the lamp and continued gnawing on the corn bread.

她坐在台阶上，在***投过来的暗淡的中，又啃起玉米饼来。

They were surrounded by dusky forms between four and five feet high, standing a few paces beyond the rays of the lantern.

灯笼几步开外，站着一些四五英尺高的模糊黑影把他们两人围了起来。

So, a lunar eclipse is when the moon looks as if it is completely or partially covered with a dark circle.

所以，当月亮看起来像是被一个黑色的完全或者部分遮住的时候，那就是月食了。

Alice-her short, inky hair in a halo of spiky disarray around her exquisite, elfin face-was suddenly standing behind his shoulder.

爱丽丝——她短短的黑发乱糟糟地围在她精致如精灵般的孔周围，像一道——突然站到了他身后。