Cách sử dụng
The word 'unsolved' is used to describe a problem or mystery that has not been solved or figured out yet. It can be used in any situation where there is an unanswered question or issue that needs to be resolved. For example, a crime that has not been solved by police is an unsolved case. A math problem that no one has been able to solve would also be considered unsolved. The word 'unsolved' is often used in news articles, TV shows, or books that talk about mysteries or puzzles that have not been solved yet.