trigger point

例句：

1. 1. The doctor found a trigger point in the patient's back that caused pain.
   医生在病人背部发现了一个触发点，导致疼痛。
2. 2.The researcher discovered a sensitive spot on the skin that could be used as an indicator of infection.
   研究员在皮肤上发现了一个敏感点，可以用来指示感染。
3. 3. The therapist applied pressure to the trigger point to relieve the patient's pain.
   治疗师对触发点施加压力以缓解患者的疼痛。