selective effect

例句：

1. 1. The new policy is designed to be more selective in its application.
   这项新政策旨在更有针对性地应用。
2. 2.The company's product line is highly selective, catering only to high-end consumers.
   该公司的产品系列非常挑剔，只服务于高端消费者。
3. 3.In the study, scientists found that the selection of genes was highly selective.
   在这项研究中，科学家们发现基因的选择非常挑剔。