A third group are known as crepuscular: they thrive in the low light of dawn and dusk and remain inactive at other hours.
第三组被称为黄昏组：他们在黎明和黄昏的微光中茁壮成长，而在其他时间则不活跃。
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.
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。
In both cases, high concentrations of the gas are dark, while low concentrations are light.
在两幅图中，气体密度越高的区域颜色也就越深，低密度区则更浅。
Even Apple CEO Steve Jobs pointed this out in his keynote address, saying, "megapixels are nice, but what these cameras are really about is capturing photons and low light photography."
苹果的CEO乔布斯甚至强调过：像素固然是越高越好，但是相机好不好真正取决于捕捉光子和弱光摄影的能力。
Since the brain produces the most melotonin in the middle of the night when it is dark, night- shift workers - whose bodies are saturated by artificial light - have abnormally low levels.
大脑在晚间会产生最多的抗黑变激素，而当黑夜加深，上夜班的工人在人造灯的照射下时，抗黑变激素的水平就会不同寻常的低。
In this project we designed light fixtures that meet all regulatory needs, fit the car and are low-cost.
在这个项目中，我们设计的车灯符合所有监管规定，适合汽车和低价”。
Rare earth metals are scarce minerals that have particular properties, such as being magnetic or shining in low light.
稀土金属是非常珍贵的矿产资源具有特别的性能。比如具有磁性也可发光可以运用于微光灯。
Given that emissions are already relatively low in Brazil's energy sector in light of its renewable matrix, opportunities for reduction are lower.
从巴西的可再生能源结构看，巴西能源业的排放水平相对较低，鉴于此，实现进一步减排的可能性较小。
The prospects of replacing today’s inefficient incandescent light bulbs with long-lasting, low-power LEDs are increasing.
时下低效的白炽灯泡被更长寿、更节能的LED灯取代的前景越来越明朗了。
Low light levels are considered 15-30 footcandles, and high light levels are considered in the 50-100 foot candle range.
一般认为低照明介于15-30英尺烛光(照明单位，指每英尺距离内之照度)，高照明介于50 - 100英尺烛光之间。
They are very light, that is to say, low mass.
很轻，也就是说，质量很小。
Plants that are overexposed to light can produce weak stems because of low auxin levels.
这已经不堪重负光可以产生弱的植物茎，因为生长素水平低。
The ceilings are low, the vistas are long, there are no landmarks, the lighting is an eerie blend of fluorescent tubing, electric light bulbs and neon advertising.
地铁站的天花板很低，远景很长，没有什么标志性建筑，荧光灯管、电灯泡和霓虹广告的光线融合成光怪陆离的混合体。
They accused cigarette makers of hiding information that "light" or "low tar" cigarettes are just as dangerous as other cigarettes.
他们起诉烟草制造商隐瞒了关于清淡型和低焦油型香烟和其他的香烟一样危险的信息。
All buttons are evenly lit in white that makes all key captions very readable in low light conditions.
所有按钮都均匀地点燃了白色的，使所有关键字幕非常可读的，在光线较暗的条件。
The building's facades are clad entirely in low-cost plywood panels, creating homogenous surfaces which are interrupted only by openings positioned to draw light into the interior.
建筑物立面完全覆盖以低成本的胶合板面板，创造出匀质的表面，这些表面在将光吸入内部的开口处而中断。
They are characterized by ruggedness, light weight, high sensitivity, low acoustic impedance, easy conformability to complex surface, low cost and large bandwidth.
它具有耐磨、量轻、灵敏度高、声学阻抗低、容易固定在复杂的表面、价格便宜，频带宽等特点。
Two areas are lit by north lights and one features low ceilings and controlled lighting for the display of miniatures and light sensitive objects.
两个区域由北向窗户照亮，一个区域位于低天花板之下，采用人工控制照明，控制照明用于展示小型物和光线敏感物品。
An underwater low light level imaging system for underwater Anti-terror is introduced and some key techniques are discussed.
介绍了用于水下反恐的水下微光成像系统，并对设计的关键技术进行了论述。
The low beam light switch is placed a little far away on the dash which is annoying but most other switches are within reach and work well.
近光灯开关设计得有点远，有点郁闷。但是大部分得开关都够得着，工作正常。
As a result, images are clearer, and the graininess and white noise that often appear when shooting in low light are suppressed.
使得图象更为清晰，抑制了在低照度下拍摄经常出现得颗粒性和写噪声。
The total REE content in magnetite ore, minerals and red jasper is low with negative cerium and europium anomalies that are light REE enrichment characters.
磁铁矿矿石、矿物及红碧玉的稀土元素含量总量低、具负铈、负铕异常，属轻稀土富集型的特征。
If you have ever heard reports of what it is like in the lowest astral levels, you will know that the vibrations are so low that it is almost completely devoid of Light.
如果你听说过类似最低星体层的报告，你将知道这种振动如此之低，以至于几乎没有光。
Only by the view of personal interest, there are nobleness and humbleness, high and low position, and the light and the heavy.
只有站在个人利益的立场才有贵贱、高低、轻重之分。
The testing content and procedure on detection range with a certain new model low light level observation device are described.
叙述国产某新型微光观察仪探测距离的测试内容和方法，并得出具有一定参考价值的结论。
Its characters are low in price, small in Volume, light in weight and simple in structure.
它具有成本低、体积小、重量轻、结构简单易行等特点。
Its characters are low in price, small in Volume, light in weight and simple in structure.
它具有成本低、体积小、重量轻、结构简单易行等特点。
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