当白天和黑夜一样长时，春天就开始了。
当白天和黑夜再次等长时，秋天就开始了。
Autumn starts when the day and night are the same length again.
当白天到来时，大海又恢复了平静。
他是个夜猫子，常常把黑夜当白天。
当白天鹅靠近妮娜的时候，黑天鹅的隐秘躲在暗处。
While the White Swan comes easily to Nina, the dark mysteries of the Black Swan evade her.
白天当白天，夜晚当夜晚，生活过得好，愉快而多欢。
Make the night night, and the day day, and you will have a pleasant time of it.
全巴黎尽在脚下，当白天视野清晰时，极目可望60公里开外。
All Paris all in the foot, when the clear vision during the day, the monastery is surrounded by 60 kilometers away is expected.
毕竟，当白天执行用电管制时，汽车正在行驶，而晚上用电需求少些时，汽车再充电。
After all, the cars are typically driven during the day, when most of the blackouts are scheduled, and charged at night, when demand is lower.
神话描述当白天或者黑夜中的一个，跨越大地的时候，另外一个则会在家中等待。
The myths say that when one, either Night or Day, crossed the earth, the other would wait at home.
当白天很长，而黑夜黑夜你孤单一人，当你确信已经厌倦了这样的生活，坚持住。
Everybody hurts when the day is long and the night, the night is yours alone, when you're sure you've had enough of this life, well hang on.
研究人员建议当白天太阳能电池中产生的电流不做它用的时候来把水分解成氢气和氧气。
The researchers suggest splitting water into hydrogen and oxygen during the day whenever electricity from solar cells is not needed for anything else.
柴郡猫：当白天变为夜晚，当沧海变为桑田，当沉重的钟声敲响，当我们再也无暇品茶。
Cheshire Cat: When the day becomes the night and the sky becomes the sea, When the clock strikes heavy and there's no time for tea.
日光趋向，增加了空间，你在，因此，当白天是不在一个空间，空间似乎减少，与室内和户外活动存在显着的对比。
Daylight tends to increase the space which you are in, hence when daylight is absent from a space, the space appears to decrease and a significant contrast between the indoors and the outdoors exists.
在大约10万年的时间里，当海水退去，世界各地的气候变得更加极端：白天更暖和，夜晚更凉爽；夏天更热，冬天更冷。
Over a period of about 100,000 years, while the seas pulled back, climates around the world became dramatically more extreme: warmer days, cooler nights; hotter summers, colder winters.
众所周知，当冬天来临时，白天会变得越来越短。
It is known to all that the day becomes shorter and shorter when winter comes.
事实：打鼾可能是无害的，但它也可以是威胁生命的睡眠障碍的一个症状，这一睡眠障碍叫做“睡眠呼吸暂停”，特别是当它伴有严重的白天的嗜睡症状的时候。
Fact: Snoring may be harmless, but it can also be a symptom of a life-threatening sleep disorder called sleep apnea, especially if it is accompanied by severe daytime sleepiness.
当夏天转变成秋天时，由于白天时间变短而且天气日益变凉，这些叶子的光合作用过程减慢了。相反，这个过程导致了较少的叶绿素，绿色褪成黄色。
As summer turns to autumn, the photosynthetic process slows down as the days get both shorter and colder, which in turn leads to less chlorophyll production and the green fading to yellow.
当光线较弱时，非洲蜂的视力比本地麦蜂要更好，因此它们在晚上觅食更有优势，而白天的花朵则被本地麦蜂所霸占。
Their ability to see in slightly lower light than native stingless bees gives the honeybees a competitive advantage at night. Earlier in the day the natives often block access to flowers.
当琼斯，夜间卡车司机基于南安波伊，新泽西，有多于八小时的白天时间睡觉，他的身体也不允许他这样。
When Jones, the nighttime trucker based in South Amboy, New Jersey, has a stretch of eight hours in the daytime to sleep, his body won't allow him.
白天就这样消逝了，我们从火葬场回来，当走进我们那条小巷时，我抬头看了看三楼父亲住的那间屋子。
The day wore on, we returned from the cremation, and as we turned into our lane I looked up at the house towards my father's rooms on the third storey.
当早晨来了而你还感着阴郁的时候，就站起来坚决地对白天说：“我还是阴郁的。”
And when morning comes and you are still dark stand up and say to the day with a will, "I am still dark."
当森林里的白天在减短，气温在降低时，苏格兰佩思郡的山毛榉(Fagussylvatica)就进入了一种保存能量的状态。
As daylight dwindles and temperatures drop in this forest in Perthshire, Scotland, beech trees (Fagus sylvatica) switch into power-saver mode.
当一个公司业绩下滑时，管理者必须做出反应——这可能意味着白天黑夜或者周末的任何时候都得上班。
When a company goes down, the administrator must respond —and this could easily mean any time of day, night, or week.
当一个公司业绩下滑时，管理者必须做出反应——这可能意味着白天黑夜或者周末的任何时候都得上班。
When a company goes down, the administrator must respond —and this could easily mean any time of day, night, or week.
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