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The Greeks used the water clock, or clepsydra.
希腊人使用的水时钟，或秤。
youdao
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Water clock: or clepsydra, Ancient device for measuring time by the gradual flow of water.
水钟，亦称漏壶，利用水的流动计时的古代时钟。
youdao
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Water clock: or clepsydra, Ancient device for measuring time by the gradual flow of water.
水钟，亦称漏壶，利用水的流动计时的古代时钟。
youdao