名词
中文翻译：Unknown
同义词：
['radioactive cobalt']
例句：
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1. The gamma rays from the radioactive cobalt source are causing damage to the surrounding environment.
来自放射性钴源的伽马射线正在对周围环境造成损害。
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2. Cobalt is a rare metal that is used in various industries, such as medicine and electronics.
钴是一种稀有金属，用于各种行业，如医药和电子。
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3. The study of cobalt is important for understanding the behavior of other elements with similar properties.
研究钴对于理解具有类似性质的其他元素的行为的很重要。