名词
中文翻译：初级兴奋
同义词：
['primary stimulation', 'primary stimulus']
例句：
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1. The child's curiosity was the primary source of his excitement.
孩子的好奇心是他兴奋的源泉。
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2. The discovery of a new species is often a primary excitation for scientists.
新物种的发现往往是科学家的首次兴奋。
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3. The novel's opening scene sets the stage for the primary excitation to come.
小说的开场场景为后续的主要兴奋做好了铺垫。