名词
中文翻译：正常水平
同义词：
['normal level', 'standard level']
例句：
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1.The water in the pool is at a normal level.
泳池里的水处于正常水平。
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2.The engineer checked the normal level of the oil well.
工程师检查了油井的正常水平。
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3.The water level in the lake has risen due to increased rainfall.
由于降雨量增加，湖泊的水位上升了。