名词
中文翻译：内心
同义词：
['heart', 'core', 'center']
例句：
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1. The leader's decision was based on the heart of the matter.
领导者的决定是基于事情的本质。
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2. The company's success is built on its strong heart and spirit.
公司的成功建立在坚定的决心和精神上。
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3. The story's true heart lies in its emotional depth.
这个故事的真正核心在于其情感深度。