名词
中文翻译：中心
同义词：
['core', 'centerpiece例句：1. The heart of the matter is that we need to find a solution quickly.（问题的关键在于我们需要迅速找到解决方案。）2. The center of the city is bustling with activity.（市中心熙熙攘攘，充满活力。）']
例句：
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1. The heart of the matter is that we need to find a solution quickly.
问题的关键在于我们需要迅速找到解决方案。
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2. The center of the city is bustling with activity.
市中心熙熙攘攘，充满活力。
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3. The center of the debate was the issue of funding.
辩论的中心议题是资金问题。