瘦素是由肥胖基因编码的一种分泌型的蛋白质，其作用主要在于调节体重、脂肪和能量代谢。
Leptin is a secretory protein encoded by obese gene, which plays role in regulating weight, fat and energy metabolisms.
肥胖是由基因，化学物质，行为和环境共同影响的复杂态，想要解释它需要一个综合的，全面的途径。
Because obesity is a complex condition affected by genes, chemicals, behavior, and the environment, explaining it will likely require a comprehensive approach.
科学家发现儿童重度肥胖是由基因引起的。
Scientists have discovered what they believe is a genetic cause of severe obesity in children.
科学家发现儿童重度肥胖是由基因引起的。
Scientists have discovered what they believe is a genetic cause of severe obesity in children.
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