多亏有了光纤，如今才能够照见人体中许多最微小的器官和最暗的腔体。
Thanks to fibre optics, it is now possible to illuminate many of the body's remotest organs and darkest orifices.
在城市附近，空气会散射出灯光的强光，产生了一种照明，将最暗的星星隐藏起来，限制了望远镜能探测到的距离。
Near cities, the air scatters the glare from lights, producing an illumination that hides the faintest stars and limits the distances that can be probed by telescopes.
在你进光线暗的房间时应该拿个手电筒。
You should use a flashlight to help you see into dark rooms.
较暗的圆圈就表示提供开放式数据的机构。
在又窄又暗的恐怖小巷。
避开杂乱的背景，或光线过亮或过暗的色块。
Avoid backgrounds that are too busy or have very light or dark patches of colour.
吉诺曼姑娘原有一种半明不暗的灵魂。
你可以在较暗的地区用双筒望远镜看到这两个星云。
These nebulae can be seen with binoculars from a dark location.
那好象是两间屋子，第一间是暗的，第二间是黑的。
These are the two chambers; the first is dark, the second is black.
单击那个最暗的图片，就是你把层拖上去的那个图片。
Click back on your darker image that you have been dragging the layers on to.
太阳黑子是太阳表面相对较冷较暗的，大致呈圆形的区域。
Sunspots are relatively cool, dark features on the sun's surface that are often roughly circular.
但在整个月食过程中，光源被挡住，月亮的盘面通常是暗的。
But during an eclipse, the source of light is blocked and the moon's disk goes unusually dark.
由于忽明忽暗的灯光遮蔽了他的视线，他什么都看不见。
He could see nothing for the pulsing blackness that shrouded his vision.
边缘亮度直接与孔径相关，孔径越大，就能看到越暗的星。
The limiting magnitude is directly related to aperture, where larger apertures allow you to see fainter stars.
据天文杂志《天空与望远镜》影响月食颜色和亮暗的因素有两个。
Two factors affect an eclipse's color and brightness, says the astronomy magazine Sky &Telescope.
一弯新月升起了，我们借助淡淡的月光，在忽明忽暗的梨树林里走着。
A new waning moon was rising gradually, helping us to walk thorough the pear forest.
在天气晴朗时从一个较暗的地点，在适当的时间，可以看见跨过天空的微弱光带。
In a clear sky from a dark location at the right time, a faint band of light is visible across the sky.
大部分的时间里激光是暗的，产生低强度的光区伴随着偶尔短暂的高强度光的闪烁。
Most of the time the lasers are dark, producing areas of light with low intensities with the occasionally brief but brilliant flashes of high - intensity light.
通过望远镜(观察条件相当良好)所能看到的最暗的星的等级称作边缘亮度。
The faintest star you can see with a telescope (under excellent seeing conditions) is referred to as the limiting magnitude.
使房间保持较暗的光线和安静，不要在床上工作，让可能造成分心的事情都离开这里。
Keep your room dark and quiet, and remove distractions (no working in bed).
“我们知道当光线暗的时候，事情就不妙了(指污染严重)，”韦德博士说道。
"We know things are really bad when the light goes out," says Dr Widder.
在忽明忽暗的竖井灯光的指引下，援救队伍在黑暗的废墟中开辟道路寻找幸存者。
Guided by periodic shafts of light, rescue teams made their way through the pitch-black as they searched for survivors.
但有数据显示，在像“黑色星期一”这样沉闷的一天的天色刚开始暗的时候吃巧克比较不会发胖。
But there's evidence to suggest that chocolate is less fattening when eaten at the start of a dark, depressing day such as Blue Monday.
黑子是太阳表面比较暗的区域，也叫活动区。那里经常发生耀斑和日冕物质抛射等剧烈的喷发现象。
Sunspots are dark patches marking magnetically active regions that often host solar flares and violent belches called coronal mass ejections.
例如，如果以16位分辨率获得读数，则值“0,255,255”代表非常暗的青色，而不是纯青色。
If the reading had been taken with a resolution of 16 bits, for example, values of "0, 255, 255" would represent a very dark cyan, instead of pure cyan.
马吕斯是个心明眼亮的人，他非见到真正的晴光不可，疑信之间的那种半明不暗的光使他痛苦。
Marius was clear-eyed, and he required the true light. The half-lights of doubt pained him.
该任务计划发现以前从未见过的目标，包括最冷的恒星、宇宙中最明亮的星系和一些最暗的近地小行星和彗星。
The mission is designed to uncover objects never seen before, including the coolest stars, the universe's most luminous galaxies and some of the darkest near-Earth asteroids and comets.
如果拍另一张照片，用相同时间曝光，但是在行星暗下来时，打开快门，然后冲洗它，行星就是暗的。
If now you take another picture, expose it the same amount of time, but the shutter is open when the star is dim and you develop that picture, the star is dim.
如果拍另一张照片，用相同时间曝光，但是在行星暗下来时，打开快门，然后冲洗它，行星就是暗的。
If now you take another picture, expose it the same amount of time, but the shutter is open when the star is dim and you develop that picture, the star is dim.
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