形容词
中文翻译：Unknown
同义词：
['basic', 'fundamental', 'primordial', 'essential']
例句：
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1. The fundamental principle of the experiment is that it must be repeatable.
实验的基本原则是它必须是可重复的。
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2. Fundamental research in quantum mechanics has led to many breakthroughs.
量子力学的基础研究已经导致了许多突破。
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3. The fundamental cause of this problem is the lack of proper maintenance.
这个问题的根本原因是缺乏适当的维护。