Cách sử dụng
The expression "discourse upon" means to talk or have a discussion about a specific topic. It is used in formal or academic settings, such as a lecture, a speech, or a debate. For example, a professor might discourse upon the history of the Roman Empire during a class, or a politician might discourse upon a particular issue during a speech. So, the expression is used when someone is speaking or writing in detail about a particular topic, usually in a serious or intellectual manner.