Cách sử dụng
The expression "bubble under" means that something or someone is quietly developing, growing or becoming popular, but it's not yet widely known or recognized. It's like a small bubble that is slowly rising up to the surface of a liquid, but it's not visible yet. For example, if someone says that a new musical artist is bubbling under the surface, it means that their music is gaining some popularity and momentum, but they are not yet a big star. Similarly, an emerging technology or a new trend may be called a bubble under if it's still in its early stages but has a lot of potential to become influential. This expression is often used in the entertainment and business industries to talk about new talent or ideas that are on the rise but haven't yet hit the mainstream.