triggering
adjective psychology specialized uk/ˈtrɪɡ.ər.ɪŋ/ us/ˈtrɪɡ.ɚ.ɪŋ/
（尤指因为让他人回忆起过去发生的可怕事件而）触发强烈情绪反应的
causing someone to feel upset and frightened because they are made to remember something bad that has happened in the past
For people with PTSD, loud noises can be triggering. 对于患有创伤后应激障碍的人来说，巨大的声响可能触发强烈的情绪反应。
a triggering experience 一段触发强烈情绪反应的经历