1.有利于生存者。 2.生育的孩子素质优良。
| 拼音 | yōu shēng | 粤拼 | jau1 saang1 |
|---|---|---|---|
| 英文 | outstanding student; to give birth to healthy babies (typically involving prenatal screening and the abortion of offspring with a severe abnormality); to enhance the genetic quality of a popu |
1.有利于生存者。 2.生育的孩子素质优良。