Cách sử dụng
"When we say 'once and for all' it means to finish something completely and never have to do it again. For example, if we clean our room 'once and for all', it means we clean it so well that we don’t have to worry about cleaning it again for a long time. Another example could be when we resolve a problem with someone 'once and for all', it means we have reached a final agreement and there won’t be any future issues related to that problem."