形容词
中文翻译：观察的
同义词：
['observatory', 'observational', 'observational data']
例句：
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1. Theresearch team conducted an observational study to investigate the correlation between exercise and mental health.
研究团队进行了一项观察性研究，以调查锻炼与心理健康之间的相关性。
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2.The scientist used observational data to analyze the effects of pollution on the environment.
科学家使用观察性数据来分析污染对环境的影响。
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3. The physicist collected observational data from various sources to validate his theory.
物理学家从各种来源收集观察性数据来验证他的理论。