threshold of excitability

例句：

1. 1. The threshold of excitability is a crucial factor in determining the response to an electrical stimulus.
   兴奋阈值是决定对电刺激反应的关键因素。
2. 2. The researcher found that the threshold of excitability was significantly lower for individuals with certain genetic mutations.
   研究者发现，具有某些基因突变的个体的兴奋阈值显著降低。
3. 3. The study aimed to determine the threshold of excitability at which the organism begins to exhibit adaptive behaviors.
   该研究旨在确定生物体开始表现出适应性行为的兴奋阈值。