Cách sử dụng
The word 'agent' is used to refer to someone who represents or acts on behalf of another person or entity. For example, a real estate agent helps people buy or sell houses, an insurance agent helps people buy insurance policies, and a secret agent is a person who works for the government to collect secret information. The word 'agent' can also refer to a substance that causes a chemical reaction or a person who is authorized to act on someone's behalf, like a legal agent or a travel agent. So, when you hear or read the word 'agent', you can think of a person who helps or represents others, or a substance that is used to cause a reaction.