形容词
中文翻译：Unknown
同义词：
['antecedent', 'primordial', 'progenitor']
例句：
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1. The discovery of the first atomic clock was precursory to modern timekeeping technology.
发现第一个原子钟预示着现代计时技术的诞生。
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2. The ancient civilization's advanced writing system was a precursor to modern scripts.
古代文明的先进书写系统是现代文字的前身。
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3. The research on genetics is a precursor to understanding human evolution.
对遗传学的研究是理解人类进化的前奏。