For that reason, his Field of Light lies dormant during the hours of day light, but when darkness falls the bulbs flower in transfixing patterns of light and colour.
出于这个原因，他的灯光田园在白天的时候是关闭灯光的，但当夜幕降临时灯光开启后，“灯泡花朵”就会变得流光溢彩，令人惊艳。
Run during light and Warmer Times of Day: If possible, run during the light hours so absorb that needed sunshine we rarely get in the winter.
在光线充足和一天最温暖的时候跑步：如果可能，在有光照的时候跑步，以吸收在冬季难以获得却又是必需的阳光。
These clocks are sometimes set by the number of hours of light or darkness in a day, by the rhythm of the tides or by the seasons.
这些时钟有时根据一天中白昼或黑夜的小时数目设定，有时根据潮汐的规律或者季节设定。
Day and night would each be exactly 12 hours long on a spring or fall equinox only if the sun were a single point of light and Earth had no atmosphere.
如果想要昼夜在春秋分日达到精确地12小时等长，除非太阳是个单点光源或者地球上没有大气层。
With limited daylight, chances are you'll be running in the dark (Alaskans, sadly, get only a few hours of dim light per day).
在有限的日光条件下，你极有可能会跑进暗处(很遗憾地说，阿拉斯加每天仅有几个小时的日光。)
What the birds really have is a clock-like mechanism which allows them to time hours of darkness or light in each day.
鸟类真正具有的是一种“似钟的装置”，使它们能从时间上区分每天黑夜或白昼的小时数。
If the sun were just a tiny point of light and Earth had no atmosphere, then day and night would each be exactly 12 hours long on a spring equinox day.
如果太阳只发出很小一点的光，并且地球周围不存在大气层，那么在春分这天，昼夜等长，都是12个小时。
To keep the battery charged, it requires exposure to 10 hours of indoor light each day or 1.5 hours of sunlight.
为给电池充电，须达到每天10小时的室内光照或1.5小时的日照时间。
"Those factors all combine to make the day of the equinox not the day when we have 12 hours [each] of light and darkness," Chester said.
“这些因素结合起来就造成了昼夜12小时等长的一天不可能是春秋分日，”切斯特说。
A second group lived in conditions akin to their natural habitat, with 16 hours of overcast day-like light, followed by eight hours of darkness.
第二组生活在与其自然栖息地类似的环境中，16小时白天似的光亮，然后8小时的黑暗。
The light should only be left on for a maximum period of 8 hours a day.
把插座上开关打开。 灯光每天只能工作8小时。
During the day natural light projects patterns of shadows through the artwork, transforming with the hours, days and seasons.
白天，自然光线透过这件艺术品，投映出阴影的图案，这些图案随不同时刻、日期和季节发生着变化。
On day three they were exposed to three hours of 260 lux, blue-enriched light starting 10.5 hours after waking up, and the effects were compared with dim light exposure on day two.
第三天，研究对象在起床10.5小时后的3小时内受到了260勒克斯的明亮蓝光照射，再将其实验结果与实验第二天用昏暗光线照射的结果进行了对比。
On day three they were exposed to three hours of 260 lux, blue-enriched light starting 10.5 hours after waking up, and the effects were compared with dim light exposure on day two.
第三天，研究对象在起床10.5小时后的3小时内受到了260勒克斯的明亮蓝光照射，再将其实验结果与实验第二天用昏暗光线照射的结果进行了对比。
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