科学家们做了一项调查。
在购买新设备之前，学生会在校园里做了一项调查，看看学生们最喜欢什么样的娱乐活动。
Before making the purchase of the new equipment, the Student Association conducted a survey on campus to see what kind of entertainment students liked best.
密歇根大学的行为性神经内分泌学家莎丽·范·安德斯针对年龄在18-19岁之间人做了一项调查。
The research, by Sari van Anders a behavioral neuroendocrinologist at the University of Michigan, focused on 18 and 19-year-old men.
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