名词
中文翻译：同位素
同义词：
['isotope', 'isotope例句：1. The scientists are studying the isotopic composition of the sample.（科学家们正在研究样本的同位素组成。）']
例句：
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1. The scientists are studying the isotopic composition of the sample.
科学家们正在研究样本的同位素组成。
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2. The discovery of new isotopes has opened up new possibilities in medicine.
发现新的同位素在医学上开辟了新的可能性。
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3.The isotopic ratios in the sample indicate that it was formed under different conditions.
样本中的同位素比例表明它在不同的条件下形成。