名词
中文翻译：水位线
同义词：
['water level curve', 'water level profile']
例句：
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1. The river's water level curve shows the depth of the water at different times of the day.
河流的水位曲线显示了一天中不同时间的水位深度。
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2. The engineer used a computer program to plot the water level curve for the reservoir.
工程师使用计算机程序绘制水库的水深曲线。
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3. The scientist observed the fluctuations in the water level curve during flood season.
科学家在洪水季节观察水位曲线的变化。