Cách sử dụng
The expression "slack off" means to reduce or become more relaxed in one's efforts or work. It is usually used in a negative context, indicating that someone is not working hard or not meeting expectations. For example, "Don't slack off on your homework" means "Don't be lazy and do your homework properly". It is often used at work or in school, but can also be used in other contexts where someone is expected to put in effort.