劍橋詞典the idea that it is possible to improve humans by allowing only some people to produce children 優(yōu)生學(xué)；人種改良學(xué) Eugenics was the central , and most controversial , part of his social philosophy . 優(yōu)生學(xué)是他社會哲學(xué)體系的中心問題，也是最具爭議性的問題。 返回 eugenics