Cách sử dụng
The expression "long in the tooth" means that someone or something is getting old or showing signs of aging. It is often used to refer to people or things that have been around for a long time and may not be as energetic or efficient as they once were. For example, if someone says "I'm feeling a bit long in the tooth these days," it means they are feeling old or getting tired. This phrase can also be used to describe items such as cars, technologies and buildings that have been used for a long time and may not be as useful or up-to-date as newer versions.