Cách sử dụng
The expression "all hours" means at any time of the day or night. It is often used to describe something that happens without a set schedule or pattern, or something that requires being available or working at any given time. For example, if someone works at a hospital, they might say they are on call "all hours" because they need to be ready to work whenever they are needed. Or, if someone is describing a noisy neighbor, they might say the neighbor plays music "at all hours" meaning they play loud music at any time, day or night.