selective affinity

例句：

1. 1. The selective affinity of the drug for the target cell is crucial for its therapeutic effect.
   药物对目标细胞的选择性亲和力对于其治疗效果至关重要。
2. 2. The selective affinity of the enzyme for its substrate is a key factor in determining its efficiency.
   酶对其底物的选择性亲和力是决定其效率的关键因素。
3. 3. The selective affinity of the antibodies for their targets is a critical aspect of immunotherapy.
   抗体对其靶标的选择性亲和力是免疫治疗的关键方面。