名词
中文翻译：水平
同义词：
['height', 'depth', 'altitude', 'grade']
例句：
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1. The engineer measured the level of the river to ensure it was safe for navigation.
工程师测量了河流的水平，以确保它对航行安全。
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2. The student needs to improve his level of English to pass the exam.
学生需要提高他的英语水平才能通过考试。
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3. The team's performance level is crucial to their success.
团队的表现水平对他们的成功至关重要。