official hour meaning in English

规定的时间
规定时间

And even in sweden ' s south , with up to seven official hours of daylight on the shortest day of the year , the sun is often masked by low clouds and never pushes far past the horizon
瑞典南部白昼最短的一天日照本应达到七个小时，但由于低云层的缘故，日光几乎不能越过地平线。
And even in sweden s south , with up to seven official hours of daylight on the shortest day of the year , the sun is often masked by low clouds and never pushes far past the horizon
十二月份的大多数日子，北部地区都处于极夜。瑞典南部白昼最短的一天日照本应达到七个小时，但由于低云层的缘故，日光几乎不能越过地平线。
And even in sweden ' s south , with up to seven official hours of daylight on the shortest day of the year , the sun is often masked by low clouds and never pushes far past the horizon
十二月份的大多数日子，北部地区都处于极夜。瑞典南部白昼最短的一天日照本应达到七个小时，但由于低云层的缘故，日光几乎不能越过地平线。