光线

Furthermore, for angles of incidence other than 0o, Snell's law (that is, sin I /sin γ=constant) holds for the ordinary but not for the extraordinary ray, since the velocity of the latter is different in different directions.

此外，入射角如果大于零度，根据折射定律(sin I /sin γ=常量)适合于寻常光，但不适于非常光线，因而在不同的方向有不同的速度。

After I wash my hands, because you pick up an amazing amount of exuviae in this city, just by walking around in the open air, and nodding to acquaintances, and speaking to friends, and copulating with lovers, in the ordinary course and death to our enemies!

沃蒲的薄片包裹着房子，尝试着我们看看能够同时在空中豢养多少东西，这至少可以给我们一种参与意识，好像我们就是佛，俯视着你微笑的神秘，这需要研究，我马上就做，趁着还有足够的光线，如果你坐在那里，最好的椅子上，请脱下衣服放在你的脚的电趾罐上，防止滑进永久性压迫的病号服中，遮盖住你裸露的部分——因为如果你做好了的话，我们就开始！

Shining light selectively on one eyespot changes the beating of the adjacent cilia. The resulting local changes in water flow are sufficient to alter the direction of swimming, computer simulations of larval swimming show.

计算机模拟幼虫游动图像显示：闪烁的光线在眼点上分布不均，这样就改变了临近纤毛拍打海水的幅度，由此引起的海水浮动足以改变生物游动的方向。

In a partially darkened room with modest ambient light, 2,000 lumens can be too much light, which can cause eyestrain and headaches.

在与部分温和光线昏暗的房间，2000流明，可太多的光，这会导致眼睛疲劳和头痛。

Vidicon collect simulate image in period of time and send to computer or DSP chip through video collection card digitlization,use computer to gain eyewinker and process digital image processing:using image area segment and boder measure to calculate area and perimeter;using image smoothness to wipp offthe infection of yawp;using dynamic background and image suited technology to overcome the infection of ray;calculation the parameter of eyewinker(area, perimeter,round measurement, proportion characer and invariant monent),using least norm to design the linearity classify parts,using image matching technologyto classify eyewinker,and to judge whether the eyewinker is harmful to diff background,if the eyewinker satisfy the character require of harmful object ,system will auto-stsrt alarm device. If there ia not have found any eyewinker, Vidicon will collect new simulate image and make processing.

本设计是将摄像机或高频头采集到的模拟图像经过视频采集卡数字化后送入计算机或DSP芯片，利用计算机对采集到的一定时间段内的图像进行异物获取，并对异物图像进行数字图像处理：利用图像区域分割和边缘检测以便进行面积和周长的计算，利用图像平滑去除噪声的影响，利用动态背景运动检测法和图像配准技术克服光线的影响，并通过异物的各类参数（如面积、周长、圆形度、比例特征和不变矩等）的计算，采用最小范数分类法设计了线性分类器，利用图像匹配技术对异物进行分类，从而判断异物是否有害，针对于不同的背景，若异物满足有害物体的特征要求，则认为物体有害，自动启动报警装置，如果没有发现有害异物则新摄入的图像将取代前一时间段的图像再进行图像处理。

Example3:Exposure control:film speed Exposure: on, Shutter Speed (s^-1): 60.0, f-number: 8.0, Vignetting: on, White balance: white

这项参数决定了图像对光的灵敏性-感光度。如果胶片速度值较高那么图像将会对光线更为敏感，图像也就越亮。

He found that he was in a grotto, went towards the opening, and through a kind of fanlight saw a blue sea and an azure sky.

他向光线透进来的那个地方走前几步，在梦的兴奋激动过后，跟着就来了现实的宁静，发觉自己是在一个岩洞里，他向洞口走去，透过一座拱形的门廊，他看到一片蔚蓝色的海和一片淡青色的天空，空气和海水在清晨的阳光里闪闪发光，水手们坐在海滩上，在那儿叽哩咕噜地谈笑着，离他们十码远的地方，静静的停着那艘小船。

He advanced several paces towards the point whence the light came , and to all the excitement of his dream succeeded the calmness of reality . he found that he was in a grotto , went towards the opening , and through a kind of fanlight saw a blue sea and an azure sky . the air and water were shining in the beams of the morning sun ; on the shore the sailors were sitting , chatting and laughing ; and at ten yards from them the boat was at anchor , undulating gracefully on the water

他向光线透进来的那个地方走前几步，在梦的兴奋激动过后，跟着就来了现实的宁静，发觉自己是在一个岩洞里，他向洞口走去，透过一座拱形的门廊，他看到一片蔚蓝色的海和一片淡青色的天空，空气和海水在清晨的阳光里闪闪发光，水手们坐在海滩上，在那儿叽哩咕噜地谈笑着，离他们十码远的地方，静静的停着那艘小船。

It was just a blank sheet of paper. The gorler looked eagerly, anxiously to see if his fellow-actor had at last learn the lines

贵族盯着白纸看了几秒钟，之后，眯着眼睛看了看，说，光线太暗了，帮我读一下

Sailing the Nile, Aswan, Egypt, 1998 Photograph by Richard Nowitz A lateen-rigged sailboat called a felucca plies the Nile River in fading light near Aswan, Egypt.

在埃及的阿斯旺附近，一艘装有三角帆的小帆船在昏暗的光线下来往于尼罗河上。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。