他们白天睡觉，夜晚捕猎。
白天越来越长，夜晚越来越短。
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.
太阳在白天光芒万丈，月亮在夜晚明亮；
虽然人类在白天能看到更多明亮的颜色，但猫在夜晚的视力更具优势。
Whereas human are able to see more bright colours during the day, cats have the advantage when it comes to night vision.
大多数人似乎在夜晚的早些时候会做更多的噩梦，在快醒来之时逐渐做一些更快乐的梦，这表明他们正在克服白天产生的消极情绪。
Most people seem to have more bad dreams early in the night, progressing toward happier ones before awakening, suggesting that they are working through negative feelings generated during the day.
白天是那么长，夜晚却更长！
The whole day is so long, and the evenings are still longer!
她跳着舞蹈，不得不在牧场上跳、在草地上跳、在雨里跳、在阳光下跳、在白天跳、在夜晚也跳——晚上是最可怕的时候。
She danced and had to jump on the ranch, on the meadow, in the rain, in the sun, during the day, and at night-the most terrible time.
对汤姆来说，白天是光辉灿烂、欢欣鼓舞的日子，而夜晚则是恐怖的时刻。
Tom's days were days of splendor and exultation to him, but his nights were seasons of horror.
那些是金色的白天和芳香的夜晚！
温暖的白天和凉爽的夜晚是种植美味胡萝卜的最佳时间。
Warm days and cool nights are the best time to grow great delicious carrots.
在白天，他和他的朝臣们都变成了狮子，但是到了夜晚，他们又会变回原来的样子。
By day he and all his court were lions, but in the evening they took their right forms again.
考虑到夜晚也可以生存，并且可供选择的白天的“交易”完全被占用，它们自然选择偏爱那些成功在夜间进行捕食“交易”的蝙蝠。
Given that there is a living to be made at night, and given that alternative daytime trades are thoroughly occupied, natural selection has favoured bats that make a go of the night-hunting trade.
它的主题是“火”；在明亮的火光下，西昌夜晚的天空和白天一样明亮。
Its theme was "fire"; at night the sky over Xichang was as bright as that in the day with the light fire.
这里白天和夜晚的温差很大。
他们白天滑雪速行，夜晚安营扎寨。
During the day they travelled swiftly, at night, they pitched their tents.
肝脏期待脂肪和糖类，在白天而不是在夜晚。
The liver expects fats and sugars during the daytime not the nighttime.
毛发使得动物可以在白天抵挡阳光，在夜晚抵挡严寒。
Hair insulates animals against the sun by day as well as against the cold by night.
他继续说：“热电装置将热量转化成电能，这些热量可以来自太阳或者温差，比如白天到夜晚的温差。”
He continued: 'Thermoelectric devices convert heat to electrical energy and this can be from the sun or a drop in temperature such as day temperatures to night.
至少电力公司应该乐于卖出更多电力，不论是白天还是夜晚。
At least the electricity companies ought to be pleased at the prospect of selling more power, day or night.
为了避免暴露，我们白天睡觉，夜晚行军。
To avoid detection, we slept during the day and marched all night.
但是总的来说，罗强调，重要的是你摄入的总的卡路里数，不管是在白天还是夜晚。
But all in all, Rosenbloom says, it's your calorie total that matters, day or night.
同地球一样，月球也同样有白天和夜晚。
近半个世纪，在全世界的很多地方，寒冷的白天和夜晚都变得更加少见，而热天气则更加常见。
In many parts of the world, cold days and nights have become rarer, and hot days and nights more common, over the past half-century.
因为此时白天短而夜晚长，太阳升得迟而落得早。
The days are short and the nights are long. The sun rises late and sets early.
冬天白天长夜晚短。
一年之中只有两次，白天和夜晚的长度一样，即春分和秋分。
It was only at two points in the year that the night and the day were of equal length and that was at the spring or fall equinox.
一年之中只有两次，白天和夜晚的长度一样，即春分和秋分。
It was only at two points in the year that the night and the day were of equal length and that was at the spring or fall equinox.
应用推荐