这爱情故事以内战为背景展开。

The love story unfolds against a background of civil war.

《牛津词典》

这部电影以俄国革命时期为背景。

The movie is set at the time of the Russian revolution.

《牛津词典》

这部电影以未来为背景。

The movie is set in the future.

《牛津词典》

In the backdrop, in the background, of that expression, "struggle for science," there are two key figures.

为科学而斗争，这个表达的背景中“,有两个关键的人物。

耶鲁公开课 - 文学理论导论课程节选

that can give you directions to the places you would want to further know more about.

这些历史背景会为你指引方向，引领你到那些你想更深入了解的地方。

关于黑人文化 - SpeakingMax英语口语达人

And it is really great because he actually goes through the thought process for you and describes - I need to give you one piece of background.

它非常厉害,因为他已经将思考的过程,为你们过了一遍，并描写,我需要给你们一点背景介绍。

麻省理工公开课 - 固态化学导论课程节选