Definition
The final stage or declining period of something.
晚期（衰退階段）
In the twilight of that empire, society was turbulent.
在那個帝國的衰落時期，社會動盪不安。
In the twilight of his career, he started writing memoirs.
在他職業生涯的末期，他開始撰寫回憶錄。
They realized their differences in the twilight of their relationship.
在他們關係的末期，他們意識到了彼此的分歧。