名词
中文翻译：Unknown
同义词：
['core', 'essential part', 'core element例句：1. The scientist analyzed the pars compacta of the sample to determine its composition.（科学家分析了样本的紧凑部分以确定其成分。）']
例句：
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1. The scientist analyzed the pars compacta of the sample to determine its composition.
科学家分析了样本的紧凑部分以确定其成分。
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2. The engineer designed a new machine with a pars compacta that would be more efficient.
工程师设计了一台新机器，其紧凑部分将更加高效。
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3. The physicist studied the pars compacta of the planet's atmosphere to understand its effects on life.
物理学家研究了行星大气的紧凑部分，以了解其对生命的影响。