Offering one's seat to elderly people on buses has become a hot topic of discussion.

在公交车上给老人让座已经成为讨论的热门话题。

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For example, Russian, French, and Spanish persons may use silence to show agreement between parties about the topic under discussion.

例如，俄罗斯人、法国人和西班牙人可能会用沉默来表示双方对正在讨论的话题达成一致。

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Students are normally expected to prepare work in advance for seminars and tutorials and this can take the form of researching a topic for discussion, by writing essays or by solving problems.

学生通常需要提前为研讨会和辅导课准备工作，这可以采取研究讨论主题、写论文或解决问题的形式。

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The first newsgroups and discussion groups appeared in the early years of the Internet, around 1980, and the bulletin board system allowed topic-related discussion groups from 1990 on.

FORBES: The Entangled Revolution Has Begun

Pierre Aidenbaum, who personally welcomed the participants and encouraged their discussion of this topic - one made all the more urgent in light of the recent, destructive riots in the French capital and elsewhere in the country during the Fall of 2005 and violent manifestations of rising anti-semitism in Western Europe.

CENTERFORSECURITYPOLICY: Center co-sponsors international conference

This was -- race has been a topic of discussion for a long, long time in this country.

WHITEHOUSE: Press Briefing