形容词
中文翻译：无穷小的
同义词：
['ultra-micro', 'miniscule', 'vanishingly small']
例句：
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1. The infinitesimal error in the calculation led to a significant change in the result.
计算中存在的极小误差导致了结果的显著变化。
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2. The scientist used an infinitesimal amount of material to perform the experiment.
科学家使用了极少量的材料进行实验。
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3. The tiny island is so infinitesimal that it can be easily overlooked by the naked eye.
这个小岛如此之小，以至于肉眼几乎无法察觉。