Cách sử dụng
"Expatiate on" means to speak or write in detail about something. It's a more formal way of saying "explain more about". For example, if someone asks you about your hobbies, you can expatiate on one of them by giving more details about why you enjoy it or how you started doing it. This expression is often used in academic or professional contexts where someone is expected to provide more information or insight about a particular topic.