n.[C]

1. 代理人；代理商；仲介人
   I made my assistant my agent while I was abroad.

   我请我的助手在我出国期间做我的代理人。

2. 间谍，特工，密探
3. 执法官，政府代表
4. 原动力，起因
   Electricity is an important agent in the life of today.

   电是今天生活中一种重要的动力。

5. 仲介，媒介
6. 【化】剂

n.

1. a person that provides a particular service, typically one organizing transactions between two other parties.
   ▸a person who manages financial or contractual matters for an actor, performer, or writer.
2. a person who works in secret to obtain information for a government.
3. a person or thing that takes an active role or produces a specified effect.
   ▸Grammar  the doer of an action.
4. Computing  an independently operating program, typically one that performs background tasks such as information retrieval or processing on behalf of a user or other program.