Lay thy shadow on the sundials

把你的阴影落在日规上

Lay thy shadow on the sundials.

把你的阴影投放在日规上。

Lay the 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”。

But sundials have their limitations too.

但日晷也有其局限。

Ancient Chinese people measured time with sundials.

中国古代使用日规计量时间.

Sundials indicate the time by casting a shadow onto a surface.

日晷透过投射于地面上的阴影，指出当下的时刻。

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…

But during the modern era, the difference between sundials and mechanical clocks became important.

但是到了现代，日晷测量的时间和机械时钟的时间之间的差异变得越发重要了。

The development of mechanical timepieces spurred the search for more accurate sundials with which to regulate them.

机械计时器的发展促使人们寻求更精确的日晷，以便校准机械计时器。