For example, if you intend to visit a rainforest to take photos of gibbons, practice in an environment that has low light levels and program your camera Settings accordingly.
例如你计划去热带雨林拍摄长臂猿，那么就可以练习在弱光条件下拍摄，并据此调整好你的相机。
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。
At night, it's the extra-sensitive rods that take over — this is why it's difficult to detect color in low levels of light.
夜间，特别敏感的视杆细胞在眼睛视物占有主导地位—这就是为什么在昏暗的光线条件下我们很难看到事物的色彩。
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。
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。
Applications such as measuring light with a photomultiplier tube generally require the use of a picoammeter due to the low current levels involved.
由于要测量的电流非常弱，所以用光电倍增管测量光的应用工作通常需要使用皮安计。
Low TDS waters have a light, sometimes crisp, perception, while higher TDS levels give the water some weight and substance.
低固体含量(TDS)水带有含汽泡，有时有脆的感觉或口感，另外高固体物质含量(TDS)赋予水质感。
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。
In one, cover was created with eucalyptus branches and light levels were kept low, mimicking an arboreal habitat.
在其中一个场地，她用桉树枝覆盖起来，并使光级度保持较低水平，以此来模仿树木栖息环境。
Britte were exposed to water deficit stress and low light intensity during flower bud differentiation and the levels of endogenous hormones and nucleic acids in their leaves were determined.
在干旱和弱光两种抑花处理条件下，对紫苏花芽生理分化期叶内核酸、内源激素含量变化进行了研究。
Nimbyish residents of low-density districts can exploit planning rules on everything from light levels to parking spaces to block plans for construction.
低密度社区Nimbyish的居民可以拿规划法规做挡箭牌为所欲为，从要求亮度水平到停车空间再到阻止一切建设。
The camera allows identification of intruders, even at extremely low light levels.
摄像机能识别入侵者，即使在极低光照条件下也能。
The camera allows identification of intruders, even at extremely low light levels.
摄像机能识别入侵者，即使在极低光照条件下也能。
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