名词
中文翻译：水平
同义词：
['grade', 'rank', 'degree']
例句：
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1. The road is level enough for a car to drive on.
这条路的坡度足够汽车行驶。
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2. The engineer's level of expertise is unmatched.
这位工程师的专业技能无人能及。
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3. The level of the water in the lake has dropped significantly.
湖里的水已经明显下降了。