名词
中文翻译：中央部分
同义词：
['core', 'core part', 'central element例句：1. The center of the city is bustling with activity.（市中心繁忙活跃。）']
例句：
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1. The center of the city is bustling with activity.
市中心繁忙活跃。
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2.The central part of the plan is to improve communication between departments.
计划的核心是改善部门间的沟通。
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3. The central part of the cake is where the filling goes in.
蛋糕的中心是填充物所在的地方。