名词
中文翻译：确定性
同义词：
['certification', 'confirmation', 'verification']
例句：
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1. The scientist ascertained the results of the experiment by analyzing the data.
科学家通过分析数据确定了实验的结果。
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2. The teacher ascertained that the student had completed his homework.
老师确认学生已经完成了家庭作业。
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3. The company's financial statements were carefully ascertained to ensure accuracy.
公司财务报表经过仔细核对以确保准确性。