名词
中文翻译：沙漏
同义词：
['sandglass', 'hourglass', 'sand-trap']
例句：
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1.The ancient Greeks used to use sand drops to measure time.
古埃及人过去用沙漏来测量时间。
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2. The sand drop in the desert is a reminder of life's fleeting moments.
沙漠中的沙漏是生命短暂时刻的提醒。
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3.The sand drops on the beach were a symbol of the changing seasons.
海滩上的沙粒象征着季节的更替。