Cách sử dụng
The word "lifesaver" is used to describe something or someone that saves a person's life in an emergency situation. For example, a lifeguard at a pool or beach can be called a "lifesaver" because they rescue people from drowning. A medical device like an oxygen mask or defibrillator can also be referred to as a "lifesaver" if it helps save someone's life in a medical emergency. The word can also be used figuratively to describe something that helps you in a difficult situation, like a good friend who gives you advice when you are feeling down.