Cách sử dụng
The word "obligation" means that you are responsible for doing something because it is your duty or because you have promised someone that you will do it. For example, if you borrow money from a friend, you have an obligation to pay them back. Or, if you make plans with someone, you have an obligation to show up or tell them if you cannot make it. You can use this word in any situation where you have a duty or responsibility to do something. It is a more formal word, so it is usually used in professional or serious settings.