3N-COUNT (艺术领域的)代理人,经纪人 An agent in the arts world is a person who gets work for an actor or musician, or who sells the work of a writer to publishers. (艺术领域的)代理人,经纪人
4N-COUNT 间谍;特务 An agent is a person who works for a country's secret service. 间谍;特务
All these years he's been an agent for the East. [+ for]
5N-COUNT [NOUNof n]动力;媒介;因素;工具 If you refer to someone or something as the agent of a particular effect, you mean that they cause this effect. 动力;媒介;因素;工具
In many societies young men regard themselves as highly active, the agents of change, shapers of the world.
6N-COUNT (化学)剂;作用剂 A chemical that has a particular effect or is used for a particular purpose can be referred to as a particular kind of agent. (化学)剂;作用剂