The hippocampus is a key brain region in circuits involved in spatial navigation and memory, and thus has been the focus of research to decode these functions.

海马是脑回路中涉及空间定位和记忆的关键大脑区域，也因此成为研究如何解码这些功能的焦点。

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Learning happens in the hippocampus, a brain region that plays a key role in acquiring memories.

学习发生在脑部的海马状突起中，这是获取记忆最关键的脑部区域。

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Miliband says delivering security is the key for the region.

米利班德说，提供安全是这个地区稳定的关键所在。

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The director of national intelligence, who is a key participant in the review, would not comment directly on a new strategy for the region.

VOA: standard.2009.03.26

Conducted by the U.N.Children's Fund and the University of Ziguinchor, the study says breaking the silence around sexual violence in the region is key to protecting girls.

VOA: standard.2010.06.29

King Abdullah said he has urged the president to focus on the Israeli-Palestinian dispute, saying that is the key to resolving all the other problems in the region.

VOA: standard.2009.04.26

Annual vehicle sales by electric vehicle segment and market share for key manufacturers are forecast through 2020, segmented by world region and key countries.

FORBES: Worldwide Electric Vehicle Sales to Reach 3.8 Million Annually by 2020

And as a consequence, the Asia Pacific region is key to achieving my goal of doubling U.S. exports and creating new jobs.

WHITEHOUSE: President Obama Welcomes Leaders at APEC Summit

With Spain, they see a fast-shrinking economy and a key region, Catalonia, using the crisis to push for more independence.

BBC: Spain budget: Cutting back for growth tomorrow