selective oxide floatation

例句：

1. 1. Theselective breeding process is used to improve thequality of crops.
   选择性育种过程用于提高农作物的质量。
2. 2. The research team focused on theselective breeding of plants for resistance to pests.
   研究团队专注于植物的选择性育种，以抵抗害虫。
3. 3. Theselective breeding of dogs hasled to many desirable traits.
   狗的选择性育种已经导致了许多吸引人的特性。