Topic
01
主题
a matter that is dealt with in a conversation, text, or study
例子
The professor introduced the main topic of today's lecture: cultural anthropology.
教授介绍了今天讲座的主要主题：文化人类学。
She chose an interesting topic for her research paper on climate change.
她为关于气候变化的研究论文选择了一个有趣的主题。
02
话题, 主题
some situation or event that is thought about
