Cách sử dụng
The expression "be onto" means to discover or realize something. It is often used when someone is close to uncovering the truth about something, or has figured out something important. For example, if a detective is investigating a crime and thinks he knows who the culprit is, he might say "I think I'm onto something." This means he believes he has found an important clue or lead that will help him solve the crime. Similarly, if someone is trying to solve a difficult puzzle or problem, they might say "I think I'm onto a solution", which means they believe they have found a promising solution to the problem.