当一只长耳大野兔出现在车灯光圈里时，他突然刹了车。
He braked suddenly as a jackrabbit darted into the bright cones of light.
刹那间，那道光圈被打破了，有什么东西轻轻掐了彼得一下。
For a moment the circle of light was broken, and something gave Peter a loving little pinch.
这些光圈表明了了镍的晶体结构，而且只能通过光线中波的特征来解释。
These rings are indicative of the crystal structure of nickel and can be explained only by invoking wavelike properties of light.
光圈的大小用“f”来代表。
将你的相机光圈开到最慢（完全打开）。
Set your camera to its lowest aperture value (completely open).
它将镜面翻转和光圈打开分为两个步骤。
It works by separating the mirror flip and aperture opening into two steps.
校准快门速度和光圈。
你能教我怎么调照相机的光圈吗？
同时控制快门和光圈并不简单，但却绝对值得。
Taking control of the shutter and aperture isn't easy, but the rewards can be great.
他们没有光圈庇佑，他们也绝不是在黑暗中发光。
They don't wear a halo and they certainly don't glow in the dark.
我们不会躺在云端，头顶着光圈弹竖琴！
我已经调好光圈焦距，只要这个按钮就行了。
I've already set the lighting and distance. You can just press this button.
问题在于要用镜头上的光圈盖住传感器芯片。
The problem is covering a rectangular sensor chip with a circle of light from the lens.
光圈调至f32-这是镜头上的最小光圈。
Set aperture to f32 - this was the smallest I could get on the lens.
规则是数字越小，光圈越大，能到达传感器的光也越多。
The rule is that the smaller the number, the wider the aperture and the more light that can hit the sensor.
由于提高产品质量和避免破产的光圈效应，福特是好运不断的。
Ford is on a roll thanks to its improving product quality and the halo effect of having avoided bankruptcy.
你还需要根据风暴的位置远近设置好适度的快门速度和光圈值。
You also need to set the proper film speed and aperture. This will all depend on location of the storm.
这种模式需要较充足的光线，并且你不能在拍摄的时候调整光圈。
This mode needs a lot of light, and you can't adjust the aperture yourself.
对于火车上的观察员来说，光圈是匀速向各方面扩展的。
To the moving observer on the train, the circle of light expanded equally on all sides.
当你继续研究比较昂贵的变焦镜头时，你会发现它们有着恒定的光圈。
As you move onto the more expensive zoom lenses, they maintain a constant aperture.
主要镜头是固定的，没有自动对焦和自动光圈以及其他小配件。
The main lens is fixed in place; there is no auto-focus, auto-aperture, or other gubbins.
而城市的光圈非常清晰，表示当时这块区域上空较少阴霾和云层。
The city light patterns are very clear, indicating that there was little cloud cover or haze in the region at the time.
而城市的光圈非常清晰，表示当时这块区域上空较少阴霾和云层。
The city light patterns are very clear, indicating that there was little cloud cover or haze in the region at the time.
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