Cách sử dụng
The expression "be no slouch" means to be very good at something or to not be lazy when doing something. It is often used to praise someone for their abilities or to encourage someone to work harder. For example, if someone is really good at playing basketball, you might say "He's no slouch on the court!" Or if someone is not putting in enough effort at work, you could say "Don't be a slouch, put in some more effort!"