Page 1
Long before digital clocks existed, people still needed to know when to work, travel, pray, meet, or rest.
在数字时钟出现之前很久，人们也一样需要知道什么时候劳动、出行、祭祀、约定或休息。正文预览
Page 2
Ancient people first watched repeating patterns in nature, such as sunrise, sunset, shadows, and the changing Moon.
古代人最早会先观察自然里的重复规律，比如日出日落、影子变化和月亮圆缺。
Page 3
A sundial used the Sun and a shadow to show how time changed during the day.
日晷就是利用太阳和影子，在白天显示时间变化的一种方法。
Page 4
Water clocks measured time by the steady movement of water, which could help even when sunlight was weak or absent.
漏刻会利用水流比较稳定地移动，帮助人们在没有明显阳光时也继续计时。
Page 5
In some places, people also used candles, incense, or other gradual changes to estimate passing time.
在有些地方，人们还会用蜡烛、香或其他会慢慢变化的东西来估计时间流逝。
