名词
中文翻译：严谨
同义词：
['stringency', 'strictness', 'severity']
例句：
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1. The new policy has a high level of rigor.
这项新政策非常严格。
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2. The research team conducted rigorous tests to validate the results.
研究小组进行了严格的测试来验证结果。
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3. The teacher's rigor in teaching made a significant difference in the students' performance.
老师教学的严格性在学生的表现上产生了显著的差异。