The calotype was revolutionary in its use of chemically treated paper in which areas hit by light became dark in tone, producing a negative image.
卡罗摄影法对化学处理纸的使用是革命性的，其中光照区域色调变暗，形成负像。
In silhouette against a crowded star field toward the constellation Scorpius, this dusty cosmic cloud evokes for some the image of an ominous dark tower.
在天蝎座拥挤的星野背景衬托下显出暗色轮廓，这个多尘的宇宙云的形象让人联想起某种不祥的黑塔。
These definitions seem designed to promote an image of Canada sort of still in our buckskins, hemmed in by dark forests.
这些定义似乎要替加拿大推广这样一种形象：人们身着鹿皮衣装，隐居在阴暗的森林中。
So the dark half of the rings is 60 timesbrighter, and the bright half 20 times brighter, than they would haveappeared if the entire system, planet included, could have beencaptured in a single image.
所以要在这一幅包括行星在内的整个系统的图像中使土星环显现出来，土星环黑暗的一半被增亮了60倍，而明亮的一半被增亮了20倍。
The photo-like true-color image acquired a few hours later shows plumes of sediment washed into the ocean along the coast and a dark plume of smoke near Sendai.
几个小时后拍摄的照片式真色彩图像显示出了海岸边被冲入大洋的沉积物，以及仙台附近的黑色烟流。
In rooms with a good deal of ambient light, a screen image with a dark background and light text tends to washout, but dark text on a light background will maintain its visual intensity a bit better.
在光线明亮的房间里，深色背景和浅色文本搭配的屏幕图像容易泛光，但是浅色背景搭配深色文本的视觉效果就好得多。
From the Big Bang to black holes, from dark matter to a possible Big Crunch, our image of the universe today is full of strange sounding ideas, and remarkable truths.
从创世大爆炸到黑洞，从黑色物质到可能出现的大坍缩，我们今天的宇宙观充满前所未知的观点和引人注目的真知灼见。
Starlight bounces off a normally dark, interstellar core cloud (center) inside a larger cloud called L183 in a short-infrared-wavelength Spitzer Space Telescope image released on September 24.
9月24日发布的斯皮策空间望远镜短红外波图像里，星光在黑暗的核状云中(中间图片)闪耀开来，这片星云处在更巨大的星云里，该星云被称作L183。
On Feb. 1, 2011, the Hinode satellite captured this breathtaking image of a coronal hole, the dark area seen at the right side of this image. A second, polar coronal hole can also be seen at left.
在2011年2月1日,日本名为日之出（Hinode)的卫星捕获了这张惊人的日冕洞图像,这个黑暗的区域在这个图片的右边，另外一个与之相对的日冕洞在图片的左边出现。
The Hubble telescope captured a display of starlight, glowing gas, and silhouetted dark clouds of interstellar dust in this 4-foot-by-8-foot image of the barred spiral galaxy NGC 1300.
照片长8英尺，宽4英尺，展现了棒旋星系NGC 1300。星光、炽热气体以及星际尘埃构成的暗云轮廓让这个星系呈现出极为美丽的一面。
The infrared image reveals that this dark cloud, called M17 SWex, is forming stars at a furious rate but has not yet spawned the most massive type of stars, known as O stars.
红外成像揭示了这片叫做M17SWex的深色的云正在疯狂地制造新星，但是质量最密的O型星还没有孵出来。
Patches of forest on the right and lower edges of the image are brown and dark green
右边和下方的小块森林呈现褐色和暗绿色。
The cause of the dark patch of water in the upper left quadrant of the image is unknown.
图片左上方四分之一处的深色块海域是未知区域。
Most people have a mental image of film editors hunched in the dark over editing consoles with lengths of film pinned to the wall behind them.
提到电影剪辑师，大多数人对他们的印象是：猫在某个昏暗角落的操作台旁，长长的胶片钉在身后的墙上。
Water color in the image changes from light blue along the coastline-indicating shallow water-to the dark blue of deeper water away from the island.
在图中沿海岸线附近的海水呈现明亮的浅蓝色——这里是浅水区，到了离岛较远水深更深的地方，海水则变成了深蓝色。
The resulting image casts light, as it were, on the question of how “dark matter” was distributed in the early universe.
这些图像，就像他们上面的光一样，给解决暗物质如何构建早期宇宙带来了希望。
The resulting image casts light, as it were, on the question of how "dark matter" was distributed in the early universe.
这些图像，就像他们上面的光一样，给解决暗物质如何构建早期宇宙带来了希望。
Along the left edge of the image, the sea ice is thinner, with gaps that reveal the dark ocean below.
沿着图片左边缘的海冰，显得更薄，从缺口处可以看到其下的深色海水。
So pick an image with simpler patterns, and lots of contrasting light and dark areas.
所以你可以选择模式简单，但是有较多明暗对比区域的图片。
In this image streaks of dark basaltic sand have been carried frombelow the ice layer to form fan-shaped deposits on top of the seasonalice.
在这幅图像中黑色玄武岩沙带被从冰层下面显露出来，在季节性冰盖的顶部形成扇形堆积。
Energetic light from this star is eating away the dust of the dark cometary globule at the top right the image.
从这颗恒星发出的高能光线正把途中右上角的黯淡的彗星似的小球体中的尘埃消灭掉。
When the oil slick is not in that part of the image, it may be imperceptible against the dark background of the ocean.
当浮油没有在图片部分区域里，可能是被黑色背景大海依着而难以察觉。
Add the shadow. Create a dark gray rectangle behind the tabs, as shown in the image.
增加一个阴影：在切换菜单的后面如上图所示画一个深灰色的长方形。
In contrast to the city lights along the sea coast and interior, the Atlantic Ocean appears as a featureless dark region filling the lower right quarter of the image.
和海岸线和内陆附近的光亮的城市相比较，大西洋完全漆黑一片，并且占据图片区域的四分之一。
This image of Saturn's moon shows evidence for the emerging view that Phoebe may be an ice-rich body coated with a thin layer of dark material.
这幅由土星火箭拍摄的月亮图片为近来崭露头角的一种观点——月亮含有丰富的冰而且其表面覆盖着厚厚一层黑色物质——找到了证据。
That's no sunspot. On the upper right of the above image of the Sun, the dark patches are actually the International Space Station (ISS) and the Space Shuttle Atlantis on mission STS-132.
此时太阳表面并没有黑子，图像的右上部的黑斑其实是国际空间站（ISS）和正在执行STS-132任务的航天飞机亚特兰蒂斯号。
He has promoted an image of being a man on the move, but photos of him in dark sunglasses and text messaging on his mobile phone even at official functions have proved embarrassing.
萨尔科齐提升了一个从不懈怠的男人形像，但是他在官方场合经常被拍下戴着墨镜、用手机发送信息的照片，让人觉得尴尬。
Patches of forest on the right and lower edges of the image are brown and dark green.
小块的林地处于图片的右侧和底部边缘，是棕色和暗绿色的。
Orion Nebula Area by Fabian Neyer. A deep image of part of the constellation of Orion showing swirling pink clouds of hydrogen and dark clumps of interstellar dust.
猎户座大星云区这是猎户星座的部分近照，图中粉红色旋转着氢气云团，暗色的是星际尘埃团。
Across the top of the image runs a distant stream of bright stars and dark dust that is part of the disk of our spiral Milky Way Galaxy.
画面上方横着的是遥远的星星之河和暗尘云，这是旋涡星系我们的银河系银盘的一部分。
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