In biology this week, the topic is Human Body.

本周生物学的主题是人体。

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Especially when the topic is difficult to start with.

尤其是一个话题难以展开的时候。

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This is the essence of this case. We will try to remind all the time that this is the issue, this is the topic.

VOA: standard.2009.10.26

And then, if we have time at the end, we'll introduce one last topic, which is isoelectronic atoms and ions.

最后，如果有时间的话，我们将再介绍最后一个主题：,等电子原子与离子。

麻省理工公开课 - 化学原理课程节选

So hermeneutics will be our first topic, and it attempts to answer the last question that I've mentioned which is raised by theory of literature.

所以诠释学，是我们的第一个话题,它试图回答的是我在探讨文学理论时提出的最后一个问题。

耶鲁公开课 - 文学理论导论课程节选

The topic is your salary, and particularly whether or not it should be raised.

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The topic is radical change that will occur as a result of offshoring.

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"Generally the topic is more in the public domain, with people talking about it more, which is a good thing".

BBC: News