GbEng
沙漏；滴漏用于计时的仪器，由两个玻璃盒组成，中由一细颈相连，盒内装有一定量的沙子，水银或其他流动物质，这些物质在一固定量的时间里，通常为一个小时，从上方的盒内慢慢流入下方的盒子中 An instrument for measuring time, consisting of two glass chambers connected by a narrow neck and containing a quantity of sand, mercury, or another flowing substance that trickles from the upper chamber to the lower in a fixed amount of time, often one hour.
定时器一种计时器，尤指控制时间间隔并指示间隔结束的那种计时器，如炉子上的计时器 A timepiece, especially one used for measuring and signaling the end of time intervals, as on a stove.