我们可以想到政府官员举行新闻发布会，律师在法庭上交叉询问证人，或教授指导研讨会讨论。

We can think of a government official holding a news conference, a lawyer cross-questioning a witness in court, or a professor directing a seminar discussion.

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这位老教授指导研究生。

The old professor supervise the postgraduate student.

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一个由杰西卡教授指导的分析表现出一种统计上有意义的效果。

An analysis conducted by Professor Jessica Utts showed a statistically significant effect.

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