eugenetics

例句：

1. 1. Eugenics has been a topic of debate in society for decades.
   遗传学已经是一个社会讨论了几十年的话题。
2. 2.The eugenics movement aimed to improve the human race through selective breeding.
   遗传学运动旨在通过选择性育种来提高人类种群。
3. 3. Eugenics has raised ethical concerns about the use of genetic engineering in medicine.
   遗传学引发了关于在医学中使用基因工程的伦理问题。