Cách sử dụng
"A shot in the arm" is an expression used to describe something that improves a situation or provides a boost to something that is struggling. It is usually used in a positive sense to mean something that provides encouragement or new energy. For example, if a company is struggling and receives an influx of new investors, this could be described as a "shot in the arm" that helps the company recover. Similarly, if someone is feeling down and receives a compliment or encouraging words, this can also be described as a "shot in the arm" that lifts their spirits.