This is the oldest working mechanical clock in the world.

这是世界上最古老的还可以使用的机械钟。

《柯林斯英汉双解大词典》

The mechanical clock kept equal hours, and this implied a new time reckoning.

机械钟的时间是一样的，这就意味着要进行新的时间计算。

youdao

The earliest recorded weight-driven mechanical clock was built in 1283 in Bedfordshire in England.

有记载的最早的重量驱动机械钟是1283年在英国贝德福德郡建造的。

youdao

Numeral font nearly duplicates that of the "digital" mechanical clock built for Dresden's Semper Opera in 1841.

FORBES: The Face of Time