1 sentence

1. 古代的人们通过观测漏壶中的水位来计时。

   gǔ​dài de rén​men tōng​guò guān​cè lòu hú zhōng de shuǐ​wèi lái jì​shí.

   Ancient people kept time by observing the water level in a clepsydra.

   Source: Dong Chinese Dictionary