名词
中文翻译：水平
同义词：
['height', 'altitude', "grade例句：1. The student's level of English is improving rapidly.（学生的英语水平正在迅速提高。）2. The level of the river has risen due to heavy rain.（由于大雨，河流的水位上升了。）"]
例句：
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1. The student's level of English is improving rapidly.
学生的英语水平正在迅速提高。
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2. The level of the river has risen due to heavy rain.
由于大雨，河流的水位上升了。
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3.The level of the ocean has been dropping recently.
最近，海洋的水平面一直在下降。