Cách sử dụng
The expression "of a certain age" is used to describe someone who is not young anymore, but also not very old. It is usually used when we don't want to mention the specific age of a person because it might be impolite or uncomfortable. For example, if someone asks about your grandma's age and you don't feel like sharing it, you could say "she's of a certain age" instead. It's a way to be vague about someone's age without being disrespectful.