After artificial intelligence, the most talked-about topic at the 2010 summit was life extension.

人工智能议题结束以后，2010年奇点峰会着重讨论了生命延续问题。

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Extremely successful bloggers like Darren Rowse started blogging about topic he is most passionate about: photography.

极其成功的博客人如Darren Rowse是以他最感兴趣的主题开博的：摄影。

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Writing about a topic helps you integrate new knowledge with what you already know.

围绕某一题目写作有助于你将新知识和已有知识结合起来。

《柯林斯英汉双解大词典》

U.S.officials note that summit talks will be open, and any leader may raise issues about Cuba or any other topic.

VOA: standard.2009.04.15

Now, in thinking about this question, this is-- you might think of the topic as the nature of wellbeing.

思考这个问题时-,你们会可能想到幸福的本质话题。

耶鲁公开课 - 死亡课程节选

We look at what emails you reply to if you reply in theory that suggests this user must care about whoever sent this email or the topic they are in.

我们看看哪些邮件要回复,如果你回复了,理论上来说这表明了用户一定很关心,发件人以及邮件的主题。

哈佛公开课 - 计算机科学课程节选

In addition to the sudden volume of information about a topic that until recently few people cared about, what strikes me most is how little I learn from most of what I read.

FORBES: Big Ideas in Corporate Social Responsibility

Lorraine Osario (ph) has a question for you about a topic we have not heard.

WHITEHOUSE: The White House

Of course, not long after thinking about this topic, two exceptional posts were penned.

FORBES: False White House Scare Thanks To Hacked AP Twitter Account Feed