water-clock E水钟
Eco-Friendly Water-Powered Clock水能源电子钟
Water-Powered Alarm Clock水力闹钟
Water-driven Astronomical Clock Tower水运仪象台
round-the-clock water supply全天候供水
Water and electricity round-the-clock水电值班室
N（名词） any of various devices for measuring time that use the escape of water as the motive force 水钟; 滴漏