agents
An agent is a person who looks after someone else's business affairs or does business on their behalf.
representative , rep
You are buying direct, rather than through an agent.
你在直接购买,而不是通过代理商购买。
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.
My literary agent thinks it is not unreasonable to expect $500,000 in total.
我的著作代理人认为50万美元的总预期并非不合理。
An agent is a person who works for a country's secret service.
All these years he's been an agent for the East.
这些年来他一直为东方国家做间谍。
A chemical that has a particular effect or is used for a particular purpose can be referred to as a particular kind of agent.
the bleaching agent in white flour.
白面粉中的漂白剂。
a chemical agent that can produce birth defects.
一种可造成出生缺陷的化学药剂。