life event
noun [ C ] uk/ˈlaɪf ɪˌvent/ us/ˈlaɪf ɪˌvent/
人生中非常重要的事件
a very important event in someone's life, such as marriage, the birth of a child, or the death of a family member
Moving house can be a very stressful life event. 搬家有可能成为非常让人焦虑的人生重大事件。