名词短语
中文翻译：调查的深度
同义词：
['investigative depth', 'investigative scope']
例句：
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1.The company's research team has conducted a thorough investigation into the issue.
该公司的研究团队对这个问题进行了深入调查。
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2. The scientist used various methods to gain a deeper understanding of the phenomenon.
科学家使用各种方法来更深入地理解这一现象。
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3. The police are conducting a thorough investigation into the incident.
警方正在对这起事件进行彻底的调查。