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2.例句：1. Epigenetics is the study of how genes can affect traits without changing the DNA sequence.
表观遗传学是研究基因如何影响特质，而DNA序列不发生改变的研究。
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2.2. Epigenetics has been shown to play a role in disease development and progression.
研究表明，表观遗传学在疾病发展和进程中起着作用。
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3. 3. Epigenetic changes can be reversed by dietary interventions, suggesting that diet may have a significant impact on health outcomes.
通过饮食干预可以逆转表观遗传变化，这表明饮食可能对健康结果产生重大影响。