emergent themes是什么意思

突发性主题
Many movies deal with commonplace themes.许多电影的主题很平庸.
Peace was the dominant theme of the conference.和平是大会的首要议题.
A slow theme introduces the first movement.第一乐章以缓慢的主旋律开始.
Let me enlarge on this basic theme.让我进一步阐述一下这个基本主题.