Cách sử dụng
The expression "puff out" means to blow air out forcefully, making something expand or become fatter. You can use this expression to describe how someone inflates a balloon by blowing air into it, or how a person's chest expands when they take a deep breath. Additionally, you can use "puff out" to describe how a person's cheeks might bulge when they are chewing food or how a cat's fur stands up when it is scared.