名词
中文翻译：放射性碳
同义词：
['radiocarbon', "radioactive carbon-14例句：1. The study of radioactive carbon is crucial for understanding the Earth's history.（研究放射性碳对于理解地球历史至关重要。）2. Radioactive carbon is a byproduct of nuclear reactions in the Earth's crust.（放射性碳是地球地壳核反应的副产品。）"]
例句：
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1. The study of radioactive carbon is crucial for understanding the Earth's history.
研究放射性碳对于理解地球历史至关重要。
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2. Radioactive carbon is a byproduct of nuclear reactions in the Earth's crust.
放射性碳是地球地壳核反应的副产品。
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3. Carbon-14 isotope is commonly used to date organic materials because it decays with a half-life of 5730 years.
碳-14同位素常用于测定有机材料的年龄，因为它的半衰期为5730年。