Cách sử dụng
"Keep a/the lid on something" means to control or suppress something, usually a situation or problem, to prevent it from getting worse or becoming public knowledge. This expression is often used in a negative or dangerous situation, where it is important to maintain control or keep things under wraps. For example, if there is a conflict or scandal brewing in a workplace, someone might say "We need to keep a lid on this until we have all the facts." This means that they need to keep the situation contained and not let it escalate until they have a better understanding of what is going on. Basically, it means to keep something from boiling over or spilling out of control.