名词
中文翻译：中心
同义词：
['focus', 'core', 'hub例句：1. The center of the city is bustling with activity.（市中心熙熙攘攘。）']
例句：
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1. The center of the city is bustling with activity.
市中心熙熙攘攘。
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2.The company's headquarters are located in the center of the city.
公司的总部位于市中心。
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3. The heart of the matter lies in understanding the central issues.
问题的核心在于理解主要问题。