名词
中文翻译：有害的变化
同义词：
['harmful change', "harmful variation例句：1. The company's product line has experienced a harmful variation in quality over the past year.（过去一年里，该公司的产品系列质量出现了有害的变化。）2. The research team discovered a harmful variation in the genetic code of the virus.（研究小组发现了病毒基因代码中的有害变异。）"]
例句：
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1. The company's product line has experienced a harmful variation in quality over the past year.
过去一年里，该公司的产品系列质量出现了有害的变化。
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2. The research team discovered a harmful variation in the genetic code of the virus.
研究小组发现了病毒基因代码中的有害变异。
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3. The scientists are studying the harmful variation in the population to understand its impact on disease transmission.
科学家们正在研究人群中的有害变异，以了解其对疾病传播的影响。