Cách sử dụng
The expression "wall off" means to separate or isolate something from the rest. It can be used in various situations like separating one room from another by building a wall or cutting off communication with someone. It is used to show that there is a clear boundary or barrier that cannot be crossed. For example, if you have a problem with someone, you may decide to "wall them off" by not talking to them anymore. This expression is usually used when there is a need to physically or emotionally separate something or someone from the rest.