Sundials don't work at night or on a cloudy day!
日晷在晚上或阴天不起作用！
Over time, the Chinese first used sundials instead of shadow sticks.
随着时间的推移，中国人第一次使用日晷代替影子表杆。
In order to track temporal hours during the day, inventors created sundials, which indicate time by the length or direction of the sun's shadow.
为了在白天追踪时间，发明家发明了日晷，它通过太阳阴影的长度或方向来指示时间。
Lay the shadow on the sundials.
把你的阴影落在日规上。
Lay thy shadow on the sundials.
把你的阴影落在日规上。
These circles were called "sundials".
这些圆圈被叫做“日晷”。
Ancient Chinese people measured time with sundials.
中国古代使用日规计量时间。
Sundials on houses and in gardens are a very popular decoration today.
如今把日规当作装饰品装在屋上和花园…
And it was in ancient Egypt that the first recorded 2 sundials were found.
最早的日晷是在古埃及发现的。
Seen from above, the shadows cast onto the sand created shifting patterns like sundials.
从上面看，投在沙滩上的阴影创造了像日晷一般的移动模式。
To be accurate, beyond needing a sunny day, sundials must be corrected based on latitude and time of year.
除了必须要有阳光外，一台精准的日晷还需要根据纬度和季节来作校准。
Despite their drawbacks, sundials continued to be used for many years after the invention of mechanical clocks.
尽管日晷存在一定的缺点，但是在机械钟表出现之前，日晷一直是最常用的计时工具。
The development of mechanical timepieces spurred the search for abundance accurate sundials with which to regulate them.
机械计时器的进展促使大部分人寻求更精确的日晷，以便校准机械计时器。
During that period, the science and technology had also made great progress, with paper, water clock, sundials and instruments used to measure earthquakes invented.
期间，科技方面也取得了很大的进步，发明了纸张，水钟，日晷以及测量地震的仪器。
During that period, the science and technology had also made great progress, with paper, water clock, sundials and instruments used to measure earthquakes invented.
期间，科技方面也取得了很大的进步，发明了纸张，水钟，日晷以及测量地震的仪器。
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