Cách sử dụng
The expression "on/through the grapevine" means to hear news or information through rumors or gossip rather than directly from a reliable source. It comes from the idea of people picking grapes off a vine and passing them along from person to person, similar to how rumors or gossip can spread from one person to another. You can use this expression when talking about information or news that you heard from someone but you're not sure if it's true or where it came from.