1.Inverness has at best seven hours of daylight in December, less than a full working day, and 19 hours of light in summer.
12月份因弗内斯（Inverness）白天最多有7个小时，不到一天的工作时间，而在夏季白天长达19个小时。
2.The system can also dim or switch off inpidual lights to coincide with seasonal changes in the hours of daylight.
此外，它还根据季节变换一天中的不同日光相应减弱或切断个人照明。
3.Winter's harsh weather, shorter hours of daylight and family demands can all aggravate feelings of stress.
冬日恶劣的天气、白昼时间的缩短和家庭的需求等都可能加剧人的压力感。
4.When spring begins, they put the clocks foward by one hour, this gives more hours of daylight in the evenings.
当春天来临时，他们就把时钟调早一个小时，让昨日还是傍晚的时间成为白天。
5.In cooler climates, onions may need fourteen to fifteen hours of daylight to start forming bulbs.
在凉爽的气候，洋葱可能需要十四到十五个小时，开始形成日光灯泡。
6.That is most people lived on isolated farmsteads and their lives revolved around the weather and the hours of daylight.
那时大多数人住在独立的农庄，他们的生活围绕着天气和白天的时光。
7.Environmental signals, such as hours of daylight, affect the daily rhythms which many plants use to control flowering and ripening.
环境讯号，例如日照时间，影响许多植物用以控制开花与成熟的日常节奏。
8.In the north, winter is the season of cold and snow. There are fewer hours of daylight and more of darkness.
在北方，冬天是寒冷和白雪的季节。日照的时间不多，黑夜更长。
9.There are also fewer hours of daylight in a 24-hour period.
一整天里的白天时间也较短些。
10.There are twelve hours of daylight.
白天有十二个小时。