3N-COUNT (藝術領域的)代理人,經紀人 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. (藝術領域的)代理人,經紀人
4N-COUNT 間諜;特務 An agent is a person who works for a country's secret service. 間諜;特務
All these years he's been an agent for the East. [+ for]
5N-COUNT [NOUNof n]動力;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. 動力;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 (化學)劑;作用劑 A chemical that has a particular effect or is used for a particular purpose can be referred to as a particular kind of agent. (化學)劑;作用劑