优生

tí chàng shǎo shēng yōu shēng kòng zhì rén kǒu shù liàng tí gāo rén kǒu sù zhì

提倡少生、优生，控制人口数量，提高人口素质。

Encourage fewer but healthier births, control the population and improve population quality.

yóu yōu shēng xué suǒ chǎn shēng de lún lǐ shang de zhēng yì

由优生学所产生的伦理上的争议

the ethical issues arising out of eugenics