名词
中文翻译：水平
同义词：
['grade', 'rank', 'altitude']
例句：
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1. The height of the mountain is 3,000 meters.
这座山的高度是3000米。
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2. The level of education in this city is very high.
这个城市的教育水平非常高。
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3. The level of the river has changed significantly since the flood.
洪水后河流的水平有了显著的变化。