copulatory stimulus

例句：

1. 1. The researcher found that the copulatory stimulus was a significant factor in the success of the experiment.
   研究者发现，交配刺激是实验成功的重要因素。
2. 2. The couple enjoyed their copulatory stimulus during their honeymoon.
   这对夫妇在蜜月期间享受他们的交配刺激。
3. 3. The study focused on the copulatory stimulus as a potential cause of sexual dysfunction.
   该研究关注交配刺激作为潜在性功能障碍的原因。