Uranus looms well over 2.5 light-hours away from Earth tonight. In contrast, the moon - our nearest celestial neighbor - resides only 1.3 light-seconds away.
今晚天王星距离地球超过2.5光小时远。相对的，月球——我们最近的邻近天体——距离地球只有1.3光秒远。
If I got hurt when fixing the light, even during office hours, I wouldn't get compensation from our company since repairing is not my responsibility.
如果我在修灯的时候受伤了，即使是在办公时间，我也不会从公司那里获得赔偿，因为维修不是我的责任。
In 1987, trillions of neutrinos arrived at Earth 3 hours before the dying star's light caught up.
1987年，万亿个中微子在临终的恒星光赶到地球3小时以前就到达了地球。
As autumn advances the days close in and the hours of light become fewer and fewer.
随着秋天的推移，白昼越来越短，光照时间也越来越少。
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。
Michael Kenna’s photography focuses on unusual landscapes with ethereal light which is achieved by photographing at dawn or at night with exposures of up to 10 hours.
MichaelKenna 的摄影作品与众不同，他往往在黎明或傍晚时分，静候近10个小时以捕捉飘渺的光线。
It found that exposure to the light increases hunger levels for several hours and even increases hunger levels after eating a meal.
并且，被此光线照射会增加数小时的饥饿感，甚至是刚刚吃过饭的人，饥饿感也会增加。
Methods: Sprague-Dawley (SD) rats were exposed to green fluorescent light for 24 hours.
方法：采用绿色荧光灯持续照射24小时造成大鼠视网膜光损伤。
Researchers raised baby mice from birth to weaning in either "summer" light cycles of 16 hours of light and eight hours of dark or "winter" cycles of eight hours of light and 16 hours of dark.
研究人员们将一组小鼠在“夏季”模拟光照周期下（光照16小时，无光照8小时）从出生培养至断乳期，而将另一组小鼠在“冬季”模拟光照周期下（光照8小时，无光照16小时）培养至相同时间。
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。
If they have a cycle shorter than 24 hours, they need evening light to sync up, and if it's longer than 24 hours, they need light in the mornings.
如果他们的自身节律比24小时短，就需要在夜晚接受光照以和自然节律同步；如果他们的自身节律超过24小时，就要在早晨对他们进行光照，以加速其自身节律。
That stress came from unpredictable periods of light alternated with darkness, lasting anytime from three to 24 hours.
应激产生自不定期明暗交替的光照，持续时间从3个小时到24个小时不等。
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。
It took several hours to shoot and then print the base image. The photographers used white and silver reflectors and black flags to equalize light levels across the table, chair, and floor.
摄影师们花费了数小时拍摄和打印桌面照片，他们采用白色/银色反光板和黑旗（black flag）使桌面、椅子和地板的光线层次保持一致。
Spending hours going through the images taken since 2002, he and his colleagues found light variations that suggested v1309 was originally a contact binary star.
这位科学家花费了大量的时间来查阅望远镜自2002年起所拍摄到的图像，他与同事发现，从v1309所发出的亮光的变化上来看，它原属于相接双星。
The time can be read easily with a touch of the button. The first two columns show hours; in column 1 each light equals 5 hours, in column 2 each light equals 1 hour.
只要轻触按钮，就能轻松读取时间：前两列显示时；第一列每盏亮灯表示五个小时，第二列每盏亮灯表示一个小时。
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。
The third group had its 12 hours of light advanced by six hours once a week, mimicking eastbound travel.
第三组的白昼时间则为每周提前6小时，以模拟向东旅行后造成的时差。
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。
"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。
And LEDs can already easily triple the 10,000 hours or so of lifetime for compact fluorescent light bulbs, which are in today's lighting vanguard.
如今比较先进的荧光灯技术使用寿命为1万小时。而LED的使用寿命可以轻松地达到它的三倍。
They will, he adds, be efficient and capable of producing a spectrum of light similar to natural daylight with an operating life of around 10,000 hours.
他还说，这些使用寿命高达大约10000小时的OLEDs将会是高效率的，且有能力创造出与自然光相类似的光谱。
They will, he adds, be efficient and capable of producing a spectrum of light similar to natural daylight with an operating life of around 10, 000 hours.
他还说，这些使用寿命高达大约10000小时的OLEDs将会是高效率的，且有能力创造出与自然光相类似的光谱。
Recently I sat on the beach and meditated for two hours and I came to a place of calm and felt filled with light, just as I would have if I'd been having a tantric session.
近来，我坐在沙滩上，冥思两个小时，我体验到一种安谧，全身充满能量，跟我上密宗习练课时感觉相似。
Observation was done at 3, 24, 72, and 120 hours after injection using light microscopy, fluorescent microscopy, and confocal microscopy.
在注射3，24，72，120小时后，分别用光学显微镜、荧光显微镜、共聚焦显微镜观察实验结果。
It is so far from Earth that radio signals, traveling at the speed of light, take 16 hours to reach the spacecraft.
它与地球的距离如此之远，以致地球发出的无线电信号要以光速传播16个小时才能到达这部航天器。
Since the invention of the light bulb, people sleep about 500 hours per year less than they used to.
自从灯泡发明之后，人们比没有灯泡的时代平均一年少睡500个小时的觉。
To avoid these issues, impose a moratorium on all electronic devices in the hour before your normal bedtime and be cautious about bright light from any sources in the hours before bed.
为避免这些问题，在正常上床睡觉前的一个小时停止使用所有电子设备，避开任何光源发出的亮光。
Even though light output decreases, we preferred color balance after 120 hours to color balance fresh out of the box.
虽然其亮度输出有衰减，但我们还是更喜欢使用120小时后的色彩平衡更多于开箱时的色彩平衡。
Even though light output decreases, we preferred color balance after 120 hours to color balance fresh out of the box.
虽然其亮度输出有衰减，但我们还是更喜欢使用120小时后的色彩平衡更多于开箱时的色彩平衡。
应用推荐