名词
中文翻译：研究
同义词：
['investigation', 'research', 'studies']
例句：
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1.He has conducted numerous studies on the effects of exercise on health.
他进行了大量关于运动对健康影响的研究。
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2. The company is conducting extensive studies to improve its product line.
该公司正在进行广泛的研究以改进其产品线。
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3.Students are encouraged to engage in various studies outside the classroom.
鼓励学生在课堂外进行各种研究。