名词
中文翻译：优生学
同义词：
['eugenics', 'selective breeding']
例句：
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1. The government implemented a new policy to promote genetically superior children.
政府实施了一项新政策，以促进遗传上更优秀的儿童。
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2. The scientist conducted experiments to study the impact of selective breeding on animal health.
科学家进行了实验，研究选择性育种对动物健康的影响。
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3. The family decided to adopt an older child from a nearby orphanage to improve their genetic profile.
这个家庭决定从附近的孤儿院收养一个年长的儿童，以提高他们的遗传特征。