这次演讲的主题是关于行动的。

The topic of this speech is about action.

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今年，博客行动日的主题是贫困。

This year, the Blog Action Day topic is Poverty.

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大会的主题为从数据到行动，强调对预防采取科学策略。

The theme for the conference is Data to Action, emphasizing the scientific approach to prevention.

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本次会议的主题是：号召全世界行动起来预防高血压。

The theme of this meeting is: the world are called into action to prevent hypertension.

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本次会议的主题是：号召全世界行动起来预防高血压。

The theme of this meeting is: the world are called into action to prevent hypertension.

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